diff --git a/packages/app/src/components/PromptDesigner.tsx b/packages/app/src/components/PromptDesigner.tsx
index 3a042047e..6b5cbc501 100644
--- a/packages/app/src/components/PromptDesigner.tsx
+++ b/packages/app/src/components/PromptDesigner.tsx
@@ -1022,6 +1022,7 @@ async function runAdHocChat(messages: ChatMessage[], config: AdHocChatConfig) {
         },
         abortGraph: undefined!,
         getPluginConfig: undefined!,
+        attachedData: {},
       } as InternalProcessContext,
     );