diff --git a/lib/services/dgg-rolling-chat-cache.js b/lib/services/dgg-rolling-chat-cache.js
index 86ceaff..139d8af 100644
--- a/lib/services/dgg-rolling-chat-cache.js
+++ b/lib/services/dgg-rolling-chat-cache.js
@@ -86,7 +86,10 @@ class ChatCache {
       return;
     }
     this.messageMatching.getLinks(message).forEach((link) => {
-      this.logger.info({ user, url: link.hostname + link.pathname, message }, 'Cached viewer url');
+      this.logger.info(
+        { user, url: link.hostname + link.pathname, msg: message },
+        'Cached viewer url',
+      );
       if (!_.has(this.viewerUrlMap, user)) this.viewerUrlMap[user] = [];
       this.viewerUrlMap[user].push({
         url: link.hostname + link.pathname,
diff --git a/lib/services/message-matching.js b/lib/services/message-matching.js
index eb0eaf7..3c011ec 100644
--- a/lib/services/message-matching.js
+++ b/lib/services/message-matching.js
@@ -5,7 +5,18 @@ module.exports = {
     return linkRegex.test(message);
   },
   getLinks(message) {
-    return Array.from(message.matchAll(new RegExp(linkRegex, 'g')), (k) => new URL(k[0]));
+    return Array.from(
+      message.matchAll(new RegExp(linkRegex, 'g')),
+      (k) => (k[0].startsWith('http') ? k[0] : `http://${k[0]}`), // add protocol to link
+    )
+      .map((link) => {
+        try {
+          return new URL(link); // crash protection
+        } catch (e) {
+          return null;
+        }
+      })
+      .filter((link) => link); // remove null
   },
   mentionsUser(message, user) {
     if (!user) return false;