Update app.py

app.py

@@ -45,8 +45,8 @@ class CodeExecutor:
             output_text = output.read()
             error_text = error.read()
             if error_text:
-                return f"{code}\n\nTraceback (most recent call last):\n{error_text}"
-            return f"{code}\n\nOutput:\n{output_text}"
+                return f"User Code:\n{code}\n\nError:\n{error_text}"
+            return f"User Code:\n{code}\n\nOutput:\n{output_text}"
 
     def execute(self, code, inputs, packages):
         try: