Update app.py

app.py

@@ -40,7 +40,7 @@ def call_openai_api(user_prompt):
                     {"role": "system", "content": "You are a research assistant. Provide factual short answers to your prompts."},
                     {"role": "user", "content": f"{text}\n\n{user_prompt}"},
                 ],
-                stream="true"
+                stream: true
            )
             ai_response = response.choices[0].message['content']
             chat_history += f"\nUser: {user_prompt}\nAI: {ai_response}"