diff --git a/src/main/resources/templates/admin/customers/customer.html b/src/main/resources/templates/admin/customers/customer.html
index 9b435b1c..3ce1aeb5 100644
--- a/src/main/resources/templates/admin/customers/customer.html
+++ b/src/main/resources/templates/admin/customers/customer.html
@@ -32,17 +32,17 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <!--/*@thymesVar id="customer" type="ch.wisv.events.core.model.customer.Customer"*/-->
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="admin/sidebar :: sidebar"></nav>
+        <nav th:replace="~{admin/sidebar :: sidebar}"></nav>
 
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <h1>Create/update customer</h1>
 
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <form th:action="@{./}" th:object="${customer}" method="POST">
                 <input type="hidden" th:field="*{key}" th:value="*{key}">
diff --git a/src/main/resources/templates/admin/customers/index.html b/src/main/resources/templates/admin/customers/index.html
index a68932c8..4b0a20ad 100644
--- a/src/main/resources/templates/admin/customers/index.html
+++ b/src/main/resources/templates/admin/customers/index.html
@@ -32,11 +32,11 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="admin/sidebar :: sidebar"></nav>
+        <nav th:replace="~{admin/sidebar :: sidebar}"></nav>
 
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <h1>Customers
@@ -45,7 +45,7 @@ <h1>Customers
                 </a>
             </h1>
 
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="table-responsive">
                 <table id="customerTable" class="table table-striped">
diff --git a/src/main/resources/templates/admin/customers/view.html b/src/main/resources/templates/admin/customers/view.html
index 529f0c79..1c998b6e 100644
--- a/src/main/resources/templates/admin/customers/view.html
+++ b/src/main/resources/templates/admin/customers/view.html
@@ -32,12 +32,12 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <!--/*@thymesVar id="customer" type="ch.wisv.events.core.model.customer.Customer"*/-->
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="admin/sidebar :: sidebar"></nav>
+        <nav th:replace="~{admin/sidebar :: sidebar}"></nav>
 
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <h1>[[${customer.getName()}]]
@@ -46,7 +46,7 @@ <h1>[[${customer.getName()}]]
                 </a>
             </h1>
 
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
 
             <div class="row mb-5">
diff --git a/src/main/resources/templates/admin/events/event.html b/src/main/resources/templates/admin/events/event.html
index a1bbe03a..895395dc 100644
--- a/src/main/resources/templates/admin/events/event.html
+++ b/src/main/resources/templates/admin/events/event.html
@@ -36,12 +36,12 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <!--/*@thymesVar id="event" type="ch.wisv.events.core.model.event.Event"*/-->
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="admin/sidebar :: sidebar"></nav>
+        <nav th:replace="~{admin/sidebar :: sidebar}"></nav>
 
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <h1>Create/update event
@@ -62,7 +62,7 @@ <h4 class="dropdown-header">Select a template</h4>
                 </div>
             </h1>
 
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <form th:action="@{./}" th:object="${event}" method="POST" enctype="multipart/form-data">
                 <input type="hidden" th:field="*{key}" th:value="*{key}">
diff --git a/src/main/resources/templates/admin/events/index.html b/src/main/resources/templates/admin/events/index.html
index 3d3a3499..e97e1418 100644
--- a/src/main/resources/templates/admin/events/index.html
+++ b/src/main/resources/templates/admin/events/index.html
@@ -32,11 +32,11 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="admin/sidebar :: sidebar"></nav>
+        <nav th:replace="~{admin/sidebar :: sidebar}"></nav>
 
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <h1>Events
@@ -45,7 +45,7 @@ <h1>Events
                 </a>
             </h1>
 
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="table-responsive">
                 <table id="eventTable" class="table table-striped">
diff --git a/src/main/resources/templates/admin/events/overview.html b/src/main/resources/templates/admin/events/overview.html
index 81d4b792..14fdf099 100644
--- a/src/main/resources/templates/admin/events/overview.html
+++ b/src/main/resources/templates/admin/events/overview.html
@@ -33,17 +33,17 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <!--/*@thymesVar id="event" type="ch.wisv.events.core.model.event.Event"*/-->
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="admin/sidebar :: sidebar"></nav>
+        <nav th:replace="~{admin/sidebar :: sidebar}"></nav>
 
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <h1>Ticket [[${event.getTitle()}]]</h1>
 
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row mb-4">
                 <div class="col-auto">
diff --git a/src/main/resources/templates/admin/events/view.html b/src/main/resources/templates/admin/events/view.html
index cc238b51..f27db91a 100644
--- a/src/main/resources/templates/admin/events/view.html
+++ b/src/main/resources/templates/admin/events/view.html
@@ -35,12 +35,12 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <!--/*@thymesVar id="event" type="ch.wisv.events.core.model.event.Event"*/-->
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="admin/sidebar :: sidebar"></nav>
+        <nav th:replace="~{admin/sidebar :: sidebar}"></nav>
 
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <h1>[[${event.getTitle()}]]
@@ -49,7 +49,7 @@ <h1>[[${event.getTitle()}]]
                 </a>
             </h1>
 
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row">
                 <div class="col">
diff --git a/src/main/resources/templates/admin/index.html b/src/main/resources/templates/admin/index.html
index 3b9442e9..abf625af 100644
--- a/src/main/resources/templates/admin/index.html
+++ b/src/main/resources/templates/admin/index.html
@@ -32,12 +32,12 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <!--/*@thymesVar id="webhook" type="ch.wisv.events.core.model.webhook.Webhook"*/-->
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="admin/sidebar :: sidebar"></nav>
+        <nav th:replace="~{admin/sidebar :: sidebar}"></nav>
 
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <h1>Overview</h1>
diff --git a/src/main/resources/templates/admin/orders/index.html b/src/main/resources/templates/admin/orders/index.html
index bacca124..bc1dd187 100644
--- a/src/main/resources/templates/admin/orders/index.html
+++ b/src/main/resources/templates/admin/orders/index.html
@@ -32,16 +32,16 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="admin/sidebar :: sidebar"></nav>
+        <nav th:replace="~{admin/sidebar :: sidebar}"></nav>
 
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <h1>Orders</h1>
 
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="table-responsive">
                 <table id="orderTable" class="table table-striped">
diff --git a/src/main/resources/templates/admin/orders/view.html b/src/main/resources/templates/admin/orders/view.html
index 809ae90a..ceafb55b 100644
--- a/src/main/resources/templates/admin/orders/view.html
+++ b/src/main/resources/templates/admin/orders/view.html
@@ -32,16 +32,16 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="admin/sidebar :: sidebar"></nav>
+        <nav th:replace="~{admin/sidebar :: sidebar}"></nav>
 
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <h1>Order #[[${order.getId()}]]</h1>
 
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row" th:if="${order.getStatus() == T(ch.wisv.events.core.model.order.OrderStatus).RESERVATION}">
                 <div class="col">
diff --git a/src/main/resources/templates/admin/products/index.html b/src/main/resources/templates/admin/products/index.html
index e93a883c..3773134c 100644
--- a/src/main/resources/templates/admin/products/index.html
+++ b/src/main/resources/templates/admin/products/index.html
@@ -32,12 +32,12 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <!--/*@thymesVar id="product" type="ch.wisv.events.core.model.product.Product"*/-->
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="admin/sidebar :: sidebar"></nav>
+        <nav th:replace="~{admin/sidebar :: sidebar}"></nav>
 
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <h1>Products
@@ -46,7 +46,7 @@ <h1>Products
                 </a>
             </h1>
 
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="table-responsive">
                 <table class="table table-striped" id="productTable">
diff --git a/src/main/resources/templates/admin/products/overview.html b/src/main/resources/templates/admin/products/overview.html
index 3913e87f..bac1b22f 100644
--- a/src/main/resources/templates/admin/products/overview.html
+++ b/src/main/resources/templates/admin/products/overview.html
@@ -33,17 +33,17 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <!--/*@thymesVar id="product" type="ch.wisv.events.core.model.product.Product"*/-->
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="admin/sidebar :: sidebar"></nav>
+        <nav th:replace="~{admin/sidebar :: sidebar}"></nav>
 
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <h1>Sold ticket [[${product.getTitle()}]]</h1>
 
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="table-responsive">
                 <table id="soldProductTable" class="table table-hover">
diff --git a/src/main/resources/templates/admin/products/product.html b/src/main/resources/templates/admin/products/product.html
index 162ad210..487ee726 100644
--- a/src/main/resources/templates/admin/products/product.html
+++ b/src/main/resources/templates/admin/products/product.html
@@ -33,12 +33,12 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <!--/*@thymesVar id="product" type="ch.wisv.events.core.model.product.Product"*/-->
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="admin/sidebar :: sidebar"></nav>
+        <nav th:replace="~{admin/sidebar :: sidebar}"></nav>
 
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <h1>Create/update product
@@ -59,7 +59,7 @@ <h4 class="dropdown-header">Select a template</h4>
                 </div>
             </h1>
 
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <form th:action="@{./}" th:object="${product}" method="POST">
                 <input type="hidden" th:field="*{key}" th:value="*{key}">
diff --git a/src/main/resources/templates/admin/products/view.html b/src/main/resources/templates/admin/products/view.html
index 738947b7..75149a62 100644
--- a/src/main/resources/templates/admin/products/view.html
+++ b/src/main/resources/templates/admin/products/view.html
@@ -32,12 +32,12 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <!--/*@thymesVar id="product" type="ch.wisv.events.core.model.product.Product"*/-->
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="admin/sidebar :: sidebar"></nav>
+        <nav th:replace="~{admin/sidebar :: sidebar}"></nav>
 
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <h1>[[${product.getTitle()}]]
@@ -46,7 +46,7 @@ <h1>[[${product.getTitle()}]]
                 </a>
             </h1>
 
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row">
                 <div class="col">
diff --git a/src/main/resources/templates/admin/salesexport/index.html b/src/main/resources/templates/admin/salesexport/index.html
index ce0bc076..b28412ff 100644
--- a/src/main/resources/templates/admin/salesexport/index.html
+++ b/src/main/resources/templates/admin/salesexport/index.html
@@ -72,11 +72,11 @@
   </head>
 
   <body>
-    <nav th:replace="fragments/header :: header"></nav>
+    <nav th:replace="~{fragments/header :: header}"></nav>
 
     <div class="container-fluid">
       <div class="row">
-        <nav th:replace="admin/sidebar :: sidebar"></nav>
+        <nav th:replace="~{admin/sidebar :: sidebar}"></nav>
 
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
           <h1>
@@ -85,7 +85,7 @@ <h1>
               Old Treasurer Tab
             </a>
           </h1>
-          <div th:replace="fragments/messages :: messages"></div>
+          <div th:replace="~{fragments/messages :: messages}"></div>
           <form
             th:action="@{./csv}"
             th:object="${SalesExportSubmission}"
diff --git a/src/main/resources/templates/admin/tasks/index.html b/src/main/resources/templates/admin/tasks/index.html
index 26c4b126..adc403f6 100644
--- a/src/main/resources/templates/admin/tasks/index.html
+++ b/src/main/resources/templates/admin/tasks/index.html
@@ -32,16 +32,16 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="admin/sidebar :: sidebar"></nav>
+        <nav th:replace="~{admin/sidebar :: sidebar}"></nav>
 
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <h1>Pending tasks</h1>
 
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="table-responsive">
                 <table id="webhookTable" class="table table-striped">
diff --git a/src/main/resources/templates/admin/treasurer/index.html b/src/main/resources/templates/admin/treasurer/index.html
index 95f26b19..3ec50a7b 100644
--- a/src/main/resources/templates/admin/treasurer/index.html
+++ b/src/main/resources/templates/admin/treasurer/index.html
@@ -32,16 +32,16 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="admin/sidebar :: sidebar"></nav>
+        <nav th:replace="~{admin/sidebar :: sidebar}"></nav>
 
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <h1>Mollie Overview</h1>
 
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="table-responsive">
                 <table id="treasurerOverview" class="table table-striped">
diff --git a/src/main/resources/templates/admin/webhooks/index.html b/src/main/resources/templates/admin/webhooks/index.html
index 9ca42ad2..158b7168 100644
--- a/src/main/resources/templates/admin/webhooks/index.html
+++ b/src/main/resources/templates/admin/webhooks/index.html
@@ -32,11 +32,11 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="admin/sidebar :: sidebar"></nav>
+        <nav th:replace="~{admin/sidebar :: sidebar}"></nav>
 
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <h1>Webhooks
@@ -45,7 +45,7 @@ <h1>Webhooks
                 </a>
             </h1>
 
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="table-responsive">
                 <table id="webhookTable" class="table table-striped">
diff --git a/src/main/resources/templates/admin/webhooks/view.html b/src/main/resources/templates/admin/webhooks/view.html
index c2e069e0..90a08133 100644
--- a/src/main/resources/templates/admin/webhooks/view.html
+++ b/src/main/resources/templates/admin/webhooks/view.html
@@ -32,12 +32,12 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <!--/*@thymesVar id="webhook" type="ch.wisv.events.core.model.webhook.Webhook"*/-->
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="admin/sidebar :: sidebar"></nav>
+        <nav th:replace="~{admin/sidebar :: sidebar}"></nav>
 
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <h1>Webhook #[[${webhook.getId()}]]
@@ -46,7 +46,7 @@ <h1>Webhook #[[${webhook.getId()}]]
                 </a>
             </h1>
 
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row">
                 <div class="col">
diff --git a/src/main/resources/templates/admin/webhooks/webhook.html b/src/main/resources/templates/admin/webhooks/webhook.html
index 318083ca..ff6a1bac 100644
--- a/src/main/resources/templates/admin/webhooks/webhook.html
+++ b/src/main/resources/templates/admin/webhooks/webhook.html
@@ -32,17 +32,17 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <!--/*@thymesVar id="webhook" type="ch.wisv.events.core.model.webhook.Webhook"*/-->
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="admin/sidebar :: sidebar"></nav>
+        <nav th:replace="~{admin/sidebar :: sidebar}"></nav>
 
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <h1>Create/update webhook</h1>
 
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <form th:action="@{./}" th:object="${webhook}" method="POST">
                 <input type="hidden" th:field="*{key}" th:value="*{key}">
diff --git a/src/main/resources/templates/error.html b/src/main/resources/templates/error.html
index 73e825c4..deb12068 100644
--- a/src/main/resources/templates/error.html
+++ b/src/main/resources/templates/error.html
@@ -32,7 +32,7 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <div class="container-fluid">
     <div class="row">
diff --git a/src/main/resources/templates/index.example.html b/src/main/resources/templates/index.example.html
index a3cff8f9..0db1476e 100644
--- a/src/main/resources/templates/index.example.html
+++ b/src/main/resources/templates/index.example.html
@@ -32,11 +32,11 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="admin/sidebar :: sidebar"></nav>
+        <nav th:replace="~{admin/sidebar :: sidebar}"></nav>
 
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <h1>Example
@@ -45,7 +45,7 @@ <h1>Example
                 </a>
             </h1>
 
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
         </main>
     </div>
 </div>
diff --git a/src/main/resources/templates/sales/index.html b/src/main/resources/templates/sales/index.html
index 7ea0727f..4a63fbb0 100644
--- a/src/main/resources/templates/sales/index.html
+++ b/src/main/resources/templates/sales/index.html
@@ -30,7 +30,7 @@
 </head>
 
 <body>
-<nav th:replace="sales/fragments/header :: header"></nav>
+<nav th:replace="~{sales/fragments/header :: header}"></nav>
 
 <div class="container-fluid">
 
diff --git a/src/main/resources/templates/sales/scan/barcode/barcode.html b/src/main/resources/templates/sales/scan/barcode/barcode.html
index 9ab4a66a..f1c01038 100644
--- a/src/main/resources/templates/sales/scan/barcode/barcode.html
+++ b/src/main/resources/templates/sales/scan/barcode/barcode.html
@@ -32,7 +32,7 @@
 
 <body style="width: calc(100vw); height: calc(100vh); background-color: #ffffff">
 
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <!--/*@thymesVar id="ticket" type="ch.wisv.events.core.model.ticket.Ticket"*/-->
 <div class="container-fluid py-2 text-white" style="height: calc(100vh - .5rem);">
diff --git a/src/main/resources/templates/sales/scan/event/barcode.html b/src/main/resources/templates/sales/scan/event/barcode.html
index 1508ab52..5aa5a632 100644
--- a/src/main/resources/templates/sales/scan/event/barcode.html
+++ b/src/main/resources/templates/sales/scan/event/barcode.html
@@ -87,7 +87,7 @@
 </head>
 
 <body id="scanPage">
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 
 <div class="overlay">
diff --git a/src/main/resources/templates/sales/scan/event/code.html b/src/main/resources/templates/sales/scan/event/code.html
index 78bf24ed..db186f01 100644
--- a/src/main/resources/templates/sales/scan/event/code.html
+++ b/src/main/resources/templates/sales/scan/event/code.html
@@ -45,13 +45,13 @@
 </head>
 
 <body id="scanPage">
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 
 <div class="container-fluid">
     <div class="row pt-5">
         <main class="col-12" role="main">
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row text-center">
                 <h3 class="w-100 mb-5" th:text="${event.getTitle()}"></h3>
diff --git a/src/main/resources/templates/sales/scan/event/qrcode.html b/src/main/resources/templates/sales/scan/event/qrcode.html
index 7bf366c3..14ac3136 100644
--- a/src/main/resources/templates/sales/scan/event/qrcode.html
+++ b/src/main/resources/templates/sales/scan/event/qrcode.html
@@ -63,7 +63,7 @@
 </head>
 
 <body id="scanPage">
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <div th:if="${error}" class="alert alert-dismissible fade show alert-danger w-100" role="alert">
     <span class="fa fa-exclamation" aria-hidden="true"></span>
diff --git a/src/main/resources/templates/sales/scan/index.html b/src/main/resources/templates/sales/scan/index.html
index 719c6bff..bd1c3b1b 100644
--- a/src/main/resources/templates/sales/scan/index.html
+++ b/src/main/resources/templates/sales/scan/index.html
@@ -32,12 +32,12 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 
 <div class="container-fluid">
     <div class="row">
         <main class="col-12 ml-auto p-5" role="main">
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row mb-4">
                 <div class="col">
diff --git a/src/main/resources/templates/sales/sell/customer/create.html b/src/main/resources/templates/sales/sell/customer/create.html
index 68966a21..4b4637c6 100644
--- a/src/main/resources/templates/sales/sell/customer/create.html
+++ b/src/main/resources/templates/sales/sell/customer/create.html
@@ -29,12 +29,12 @@
 </head>
 
 <body id="scanPage">
-<nav th:replace="sales/fragments/header :: header"></nav>
+<nav th:replace="~{sales/fragments/header :: header}"></nav>
 
 <div class="container-fluid">
     <div class="row">
         <main class="col-12" role="main">
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <!--/*@thymesVar id="customer" type="ch.wisv.events.core.model.customer.Customer"*/-->
             <form th:action="@{'/sales/sell/customer/' + ${order.getPublicReference()}}" th:object="${customer}"
diff --git a/src/main/resources/templates/sales/sell/customer/rfid.html b/src/main/resources/templates/sales/sell/customer/rfid.html
index 4ff535d7..9cd7582a 100644
--- a/src/main/resources/templates/sales/sell/customer/rfid.html
+++ b/src/main/resources/templates/sales/sell/customer/rfid.html
@@ -32,12 +32,12 @@
 </head>
 
 <body id="scanPage">
-<nav th:replace="sales/fragments/header :: header"></nav>
+<nav th:replace="~{sales/fragments/header :: header}"></nav>
 
 <div class="container-fluid">
     <div class="row">
         <main class="col-12" role="main">
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <!--/*@thymesVar id="customer" type="ch.wisv.events.core.model.customer.Customer"*/-->
             <!--/*@thymesVar id="order" type="ch.wisv.events.core.model.order.Order"*/-->
diff --git a/src/main/resources/templates/sales/sell/index.html b/src/main/resources/templates/sales/sell/index.html
index d8e652be..80431ea0 100644
--- a/src/main/resources/templates/sales/sell/index.html
+++ b/src/main/resources/templates/sales/sell/index.html
@@ -31,14 +31,14 @@
 </head>
 
 <body>
-<nav th:replace="sales/fragments/header :: header"></nav>
+<nav th:replace="~{sales/fragments/header :: header}"></nav>
 
 <!--/*@thymesVar id="product" type="ch.wisv.events.core.model.product.Product"*/-->
 <div class="container-fluid">
 
     <div class="row">
         <main class="col-12" role="main">
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <form class="form w-100" id="orderForm" th:action="@{/sales/sell/}" method="POST">
                 <div class="row justify-content-center">
diff --git a/src/main/resources/templates/sales/sell/order/cancelled.html b/src/main/resources/templates/sales/sell/order/cancelled.html
index cc9b3ae7..1ea60df9 100644
--- a/src/main/resources/templates/sales/sell/order/cancelled.html
+++ b/src/main/resources/templates/sales/sell/order/cancelled.html
@@ -31,12 +31,12 @@
 </head>
 
 <body>
-<nav th:replace="sales/fragments/header :: header"></nav>
+<nav th:replace="~{sales/fragments/header :: header}"></nav>
 
 <div class="container-fluid">
     <div class="row">
         <main class="col-12 ml-auto p-5" role="main">
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row">
                 <div class="col text-center mt-5">
diff --git a/src/main/resources/templates/sales/sell/order/complete.html b/src/main/resources/templates/sales/sell/order/complete.html
index 1f7a473b..34ecf46e 100644
--- a/src/main/resources/templates/sales/sell/order/complete.html
+++ b/src/main/resources/templates/sales/sell/order/complete.html
@@ -31,12 +31,12 @@
 </head>
 
 <body>
-<nav th:replace="sales/fragments/header :: header"></nav>
+<nav th:replace="~{sales/fragments/header :: header}"></nav>
 
 <div class="container-fluid">
     <div class="row">
         <main class="col-12 ml-auto p-5" role="main">
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row">
                 <div class="col text-center mt-5">
diff --git a/src/main/resources/templates/sales/sell/order/index.html b/src/main/resources/templates/sales/sell/order/index.html
index 40c95b27..86bc14db 100644
--- a/src/main/resources/templates/sales/sell/order/index.html
+++ b/src/main/resources/templates/sales/sell/order/index.html
@@ -32,13 +32,13 @@
 </head>
 
 <body id="scanPage">
-<nav th:replace="sales/fragments/header :: header"></nav>
+<nav th:replace="~{sales/fragments/header :: header}"></nav>
 
 <div class="container-fluid">
 
     <div class="row">
         <main class="col-12" role="main">
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <!--/*@thymesVar id="order" type="ch.wisv.events.core.model.order.Order"*/-->
             <div class="row">
diff --git a/src/main/resources/templates/sales/stats/event/index.html b/src/main/resources/templates/sales/stats/event/index.html
index 016c3adb..e2784e89 100644
--- a/src/main/resources/templates/sales/stats/event/index.html
+++ b/src/main/resources/templates/sales/stats/event/index.html
@@ -31,13 +31,13 @@
 </head>
 
 <body style="width: calc(100vw); height: calc(100vh)">
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 <!--/*@thymesVar id="event" type="ch.wisv.events.core.model.event.Event"*/-->
 <!--/*@thymesVar id="moneyEarned" type="java.lang.Double"*/-->
 <!--/*@thymesVar id="ticketsSold" type="java.lang.Integer"*/-->
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="sales/stats/sidebar :: sidebar"></nav>
+        <nav th:replace="~{sales/stats/sidebar :: sidebar}"></nav>
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <h1 th:text="${event.getTitle()}"/>
             <div class="row">
diff --git a/src/main/resources/templates/sales/stats/index.html b/src/main/resources/templates/sales/stats/index.html
index 806fe2c0..a81c83e9 100644
--- a/src/main/resources/templates/sales/stats/index.html
+++ b/src/main/resources/templates/sales/stats/index.html
@@ -32,11 +32,11 @@
 </head>
 
 <body>
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 <div class="container-fluid">
     <div class="row">
         <main class="col-12 ml-auto p-5" role="main">
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row mb-4">
                 <div class="col">
diff --git a/src/main/resources/templates/sales/stats/products/index.html b/src/main/resources/templates/sales/stats/products/index.html
index 38c36682..efc69da4 100644
--- a/src/main/resources/templates/sales/stats/products/index.html
+++ b/src/main/resources/templates/sales/stats/products/index.html
@@ -31,10 +31,10 @@
 </head>
 
 <body style="width: calc(100vw); height: calc(100vh)">
-<nav th:replace="fragments/header :: header"></nav>
+<nav th:replace="~{fragments/header :: header}"></nav>
 <div class="container-fluid">
     <div class="row">
-        <nav th:replace="sales/stats/sidebar :: sidebar"></nav>
+        <nav th:replace="~{sales/stats/sidebar :: sidebar}"></nav>
         <main class="col-sm-9 ml-sm-auto col-md-10 p-5" role="main">
             <div class="row" th:each="product : ${products}">
                 <div class="col">
diff --git a/src/main/resources/templates/webshop/checkout/create.html b/src/main/resources/templates/webshop/checkout/create.html
index c093c1b2..1a579839 100644
--- a/src/main/resources/templates/webshop/checkout/create.html
+++ b/src/main/resources/templates/webshop/checkout/create.html
@@ -33,12 +33,12 @@
 </head>
 
 <body>
-<nav th:replace="webshop/fragments/header :: header ('Checkout as guest', 'events_header.jpg')"></nav>
+<nav th:replace="~{webshop/fragments/header :: header ('Checkout as guest', 'events_header.jpg')}"></nav>
 
 <div class="container">
     <div class="row">
         <main class="col py-5" role="main">
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row">
                 <div class="col">
diff --git a/src/main/resources/templates/webshop/checkout/customer.html b/src/main/resources/templates/webshop/checkout/customer.html
index 2ff8b9e3..8116fc53 100644
--- a/src/main/resources/templates/webshop/checkout/customer.html
+++ b/src/main/resources/templates/webshop/checkout/customer.html
@@ -33,12 +33,12 @@
 </head>
 
 <body>
-<nav th:replace="webshop/fragments/header :: header ('Checkout', 'events_header.jpg')"></nav>
+<nav th:replace="~{webshop/fragments/header :: header ('Checkout', 'events_header.jpg')}"></nav>
 
 <div class="container">
     <div class="row">
         <main class="col py-5" role="main">
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row">
                 <div class="col-12 col-md-5">
diff --git a/src/main/resources/templates/webshop/checkout/index.html b/src/main/resources/templates/webshop/checkout/index.html
index 5cd5bb97..8f087bf3 100644
--- a/src/main/resources/templates/webshop/checkout/index.html
+++ b/src/main/resources/templates/webshop/checkout/index.html
@@ -33,12 +33,12 @@
 </head>
 
 <body>
-<nav th:replace="webshop/fragments/header :: header ('Checkout', 'events_header.jpg')"></nav>
+<nav th:replace="~{webshop/fragments/header :: header ('Checkout', 'events_header.jpg')}"></nav>
 
 <div class="container">
     <div class="row">
         <main class="col py-3" role="main">
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row">
                 <div class="col my-4">
diff --git a/src/main/resources/templates/webshop/complete.html b/src/main/resources/templates/webshop/complete.html
index 188a79bc..08a0150a 100644
--- a/src/main/resources/templates/webshop/complete.html
+++ b/src/main/resources/templates/webshop/complete.html
@@ -35,22 +35,22 @@
 <body>
 
 <div th:if="${order.getStatus() == T(ch.wisv.events.core.model.order.OrderStatus).PAID}">
-    <nav th:replace="tickets/fragments/header :: header ('Thanks for ordering!', 'events_header.jpg')"></nav>
+    <nav th:replace="~{tickets/fragments/header :: header ('Thanks for ordering!', 'events_header.jpg')}"></nav>
 </div>
 
 <div th:if="${order.getStatus() == T(ch.wisv.events.core.model.order.OrderStatus).PENDING}">
-    <nav th:replace="tickets/fragments/header :: header ('Waiting for the payment', 'events_header.jpg')"></nav>
+    <nav th:replace="~{tickets/fragments/header :: header ('Waiting for the payment', 'events_header.jpg')}"></nav>
 </div>
 
 <div th:if="${order.getStatus() == T(ch.wisv.events.core.model.order.OrderStatus).CANCELLED}">
-    <nav th:replace="tickets/fragments/header :: header ('Order cancelled', 'events_header.jpg')"></nav>
+    <nav th:replace="~{tickets/fragments/header :: header ('Order cancelled', 'events_header.jpg')}"></nav>
 </div>
 
 
 <div class="container-fluid">
     <div class="row">
         <main class="col p-5" role="main">
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row justify-content-center">
                 <div class="col-12 col-md-6 text-center"
diff --git a/src/main/resources/templates/webshop/event.html b/src/main/resources/templates/webshop/event.html
index 5bfd59f4..e6e9f61b 100644
--- a/src/main/resources/templates/webshop/event.html
+++ b/src/main/resources/templates/webshop/event.html
@@ -108,7 +108,7 @@ <h1 class="mb-3" th:text="${event.getTitle()}"></h1>
                 </div>
             </div>
 
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="card-deck" th:if="${!event.hasExternalProductUrl()}">
                 <div class="card mb-3" th:each="product : ${event.getProducts()}">
diff --git a/src/main/resources/templates/webshop/index.html b/src/main/resources/templates/webshop/index.html
index f7305df3..c3b8c5eb 100644
--- a/src/main/resources/templates/webshop/index.html
+++ b/src/main/resources/templates/webshop/index.html
@@ -33,7 +33,7 @@
 </head>
 
 <body>
-<nav th:replace="webshop/fragments/header :: header ('Webshop', 'events_header.jpg')"></nav>
+<nav th:replace="~{webshop/fragments/header :: header ('Webshop', 'events_header.jpg')}"></nav>
 
 <div class="container-fluid">
     <div class="row">
@@ -48,7 +48,7 @@
                 </div>
             </div>
 
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row justify-content-left">
                 <!--/*@thymesVar id="event" type="ch.wisv.events.core.model.event.Event"*/-->
diff --git a/src/main/resources/templates/webshop/overview/index.html b/src/main/resources/templates/webshop/overview/index.html
index b500374b..76ce45ba 100644
--- a/src/main/resources/templates/webshop/overview/index.html
+++ b/src/main/resources/templates/webshop/overview/index.html
@@ -33,7 +33,7 @@
 </head>
 
 <body>
-<nav th:replace="webshop/fragments/header :: header ('my events', 'events_header.jpg')"></nav>
+<nav th:replace="~{webshop/fragments/header :: header ('my events', 'events_header.jpg')}"></nav>
 
 <div class="container-fluid">
     <div class="row pt-5">
@@ -43,7 +43,7 @@
             </a>
         </div>
     </div>
-    <div th:replace="fragments/messages :: messages"></div>
+    <div th:replace="~{fragments/messages :: messages}"></div>
 
     <div class="row">
         <div class="col-12 col-lg-3 mb-5">
diff --git a/src/main/resources/templates/webshop/payment/index.html b/src/main/resources/templates/webshop/payment/index.html
index 6f10afd1..710d3922 100644
--- a/src/main/resources/templates/webshop/payment/index.html
+++ b/src/main/resources/templates/webshop/payment/index.html
@@ -33,12 +33,12 @@
 </head>
 
 <body>
-<nav th:replace="webshop/fragments/header :: header ('Checkout', 'events_header.jpg')"></nav>
+<nav th:replace="~{webshop/fragments/header :: header ('Checkout', 'events_header.jpg')}"></nav>
 
 <div class="container">
     <div class="row">
         <main class="col py-5" role="main">
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row mb-5">
                 <div class="col-12">
diff --git a/src/main/resources/templates/webshop/return/cancelled.html b/src/main/resources/templates/webshop/return/cancelled.html
index 9ddd59aa..d319d6e1 100644
--- a/src/main/resources/templates/webshop/return/cancelled.html
+++ b/src/main/resources/templates/webshop/return/cancelled.html
@@ -33,12 +33,13 @@
 </head>
 
 <body>
-<nav th:replace="webshop/fragments/header :: header ('Order has been cancelled!', 'events_order-cancelled-owl.jpg')"></nav>
+<nav
+        th:replace="~{webshop/fragments/header :: header ('Order has been cancelled!', 'events_order-cancelled-owl.jpg')}"></nav>
 
 <div class="container">
     <div class="row">
         <main class="col-12 col-lg-8 mx-auto py-5" role="main">
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row">
                 <div class="col my-4">
diff --git a/src/main/resources/templates/webshop/return/error.html b/src/main/resources/templates/webshop/return/error.html
index 3d68c36b..e4b3a3a6 100644
--- a/src/main/resources/templates/webshop/return/error.html
+++ b/src/main/resources/templates/webshop/return/error.html
@@ -33,12 +33,12 @@
 </head>
 
 <body>
-<nav th:replace="webshop/fragments/header :: header ('Something went wrong', 'event_order-error.jpg')"></nav>
+<nav th:replace="~{webshop/fragments/header :: header ('Something went wrong', 'event_order-error.jpg')}"></nav>
 
 <div class="container">
     <div class="row">
         <main class="col-12 col-lg-8 mx-auto py-5" role="main">
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row">
                 <div class="col my-4">
diff --git a/src/main/resources/templates/webshop/return/expired.html b/src/main/resources/templates/webshop/return/expired.html
index b97f91a5..c87630b2 100644
--- a/src/main/resources/templates/webshop/return/expired.html
+++ b/src/main/resources/templates/webshop/return/expired.html
@@ -33,12 +33,12 @@
 </head>
 
 <body>
-<nav th:replace="webshop/fragments/header :: header ('Payment is expired!', 'events_order-error.jpg')"></nav>
+<nav th:replace="~{webshop/fragments/header :: header ('Payment is expired!', 'events_order-error.jpg')}"></nav>
 
 <div class="container">
     <div class="row">
         <main class="col-12 col-lg-8 mx-auto py-5" role="main">
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row">
                 <div class="col my-4">
diff --git a/src/main/resources/templates/webshop/return/pending.html b/src/main/resources/templates/webshop/return/pending.html
index 61f3b4b5..918fe120 100644
--- a/src/main/resources/templates/webshop/return/pending.html
+++ b/src/main/resources/templates/webshop/return/pending.html
@@ -33,12 +33,12 @@
 </head>
 
 <body>
-<nav th:replace="webshop/fragments/header :: header ('Payment pending', 'events_order-pending.jpg')"></nav>
+<nav th:replace="~{webshop/fragments/header :: header ('Payment pending', 'events_order-pending.jpg')}"></nav>
 
 <div class="container">
     <div class="row">
         <main class="col-12 col-lg-8 mx-auto py-5" role="main">
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row">
                 <div class="col my-4  text-center">
diff --git a/src/main/resources/templates/webshop/return/reservation.html b/src/main/resources/templates/webshop/return/reservation.html
index 182a4416..f9d00764 100644
--- a/src/main/resources/templates/webshop/return/reservation.html
+++ b/src/main/resources/templates/webshop/return/reservation.html
@@ -33,12 +33,13 @@
 </head>
 
 <body>
-<nav th:replace="webshop/fragments/header :: header ('Reservation has been made!', 'events_order-reservation.jpg')"></nav>
+<nav
+        th:replace="~{webshop/fragments/header :: header ('Reservation has been made!', 'events_order-reservation.jpg')}"></nav>
 
 <div class="container">
     <div class="row">
         <main class="col-12 col-lg-8 mx-auto py-5" role="main">
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row">
                 <div class="col my-4">
diff --git a/src/main/resources/templates/webshop/return/success.html b/src/main/resources/templates/webshop/return/success.html
index 067b715f..c14eb252 100644
--- a/src/main/resources/templates/webshop/return/success.html
+++ b/src/main/resources/templates/webshop/return/success.html
@@ -33,12 +33,12 @@
 </head>
 
 <body>
-<nav th:replace="webshop/fragments/header :: header ('Thanks for ordering!', 'events_order-complete.jpg')"></nav>
+<nav th:replace="~{webshop/fragments/header :: header ('Thanks for ordering!', 'events_order-complete.jpg')}"></nav>
 
 <div class="container">
     <div class="row">
         <main class="col-12 col-lg-8 mx-auto py-5" role="main">
-            <div th:replace="fragments/messages :: messages"></div>
+            <div th:replace="~{fragments/messages :: messages}"></div>
 
             <div class="row">
                 <div class="col my-4">
diff --git a/src/main/resources/templates/webshop/tickets/transfer.html b/src/main/resources/templates/webshop/tickets/transfer.html
index 949100ac..ae653b1b 100644
--- a/src/main/resources/templates/webshop/tickets/transfer.html
+++ b/src/main/resources/templates/webshop/tickets/transfer.html
@@ -33,7 +33,7 @@
 </head>
 
 <body>
-<nav th:replace="webshop/fragments/header :: header ('my events', 'events_header.jpg')"></nav>
+<nav th:replace="~{webshop/fragments/header :: header ('my events', 'events_header.jpg')}"></nav>
 
 <div class="container-fluid">
     <div class="row pt-5">
@@ -43,7 +43,7 @@
             </a>
         </div>
     </div>
-    <div th:replace="fragments/messages :: messages"></div>
+    <div th:replace="~{fragments/messages :: messages}"></div>
     <div class="row">
         <div class="col-6 col-lg-4">
             <div class="card">
