Update app.py

app.py

@@ -57,6 +57,7 @@ def stream_chat(message, history: list, temperature: float, max_new_tokens: int)
             image = None
         else:
             image = Image.open(history[0][0][0])
+            for prompt, answer in history:
                 if answer is None:
                     conversation.extend([{"role": "user", "content": prompt},{"role": "assistant", "content": ""}])
                 else: