diff --git a/web/app/components/base/mermaid/utils.ts b/web/app/components/base/mermaid/utils.ts
index cc71572339..5f4a97e872 100644
--- a/web/app/components/base/mermaid/utils.ts
+++ b/web/app/components/base/mermaid/utils.ts
@@ -174,6 +174,7 @@ export function isMermaidCodeComplete(code: string): boolean {
     return hasValidStart && isBalanced && hasNoSyntaxErrors
   }
   catch (error) {
+    console.error('Mermaid code validation error:', error)
     return false
   }
 }