Update app.py

app.py

@@ -20,7 +20,8 @@ def query_openai(question, model="gpt-4o-mini"):
                 {"role": "user", "content": question}
             ]
         )
-        return response.choices[0].message['content']
+        # Correct way to access message content
+        return response.choices[0].message.content
     except Exception as e:
         return f"Error: {e}"