Update app.py

app.py

@@ -9,9 +9,15 @@ LEVEL = 1
 lock = threading.Lock()
 
 def invoke(level, question, file_name, ground_truth, openai_api_key):
+    if not level:
+        raise gr.Error("Level is required.")
+        
     if not question:
         raise gr.Error("Question is required.")
-   
+
+    if not ground_truth:
+        raise gr.Error("Ground Truth is required.")
+        
     if not openai_api_key:
         raise gr.Error("OpenAI API Key is required.")