Update app.py

app.py

@@ -38,19 +38,22 @@ def respond(
     messages.append({"role": "user", "content": message})
 
     response = ""
-    
-    for message in  client.chat.completions.create(
+    try:
+        _ = client.chat.completions.create(
         model="Qwen/Qwen2.5-72B-Instruct",
         max_tokens=max_tokens,
         stream=True,
         temperature=temperature,
         top_p=top_p,
         messages=messages,
-    ):
-        token = message.choices[0].delta.content
+        )
+        for message in _:
+            token = message.choices[0].delta.content
         
-        response += token
-        yield response
+            response += token
+            yield response
+    except Exception as e:
+        yield str(e)
         
 chatbot = gr.Chatbot(height=600)