Update app.py

app.py

@@ -69,7 +69,7 @@ def simulate_deployment(arm_template):
         # Validate template
         is_valid, validation_message = validate_template(template)
         if not is_valid:
-            return [], [], [], validation_message
+            return [], [], [], [], validation_message
 
         # Resolve expressions
         resolved_template = resolve_template_expressions(template)