Update app.py

app.py

@@ -10,7 +10,6 @@ client = OpenAI(
 )
 
 def runpod_chat(question, history=None):
-    # Explicitly initialize history if it's None
     if history is None:
         history = []  # Ensure history starts as an empty list if none is provided
     history.append({"role": "user", "content": question})
@@ -26,7 +25,7 @@ def runpod_chat(question, history=None):
     # Stream the response and add to history
     full_response = ""
     for message in response_stream:
-        response = message.choices[0].delta.content
+        response = message.choices[0].delta.content if message.choices[0].delta.content is not None else "No response."
         full_response += "RunPod: " + response + "\n"
         history.append({"role": "assistant", "content": response})
         time.sleep(0.3)  # Simulate typing delay