Update app.py

app.py

@@ -216,7 +216,7 @@ def generate(data: WebRTCData, history: list[dict], system_prompt: str = "", max
     yield history
     new_message = {"role": "assistant", "content": ""}
     for output in _generate(message, history, system_prompt, max_new_tokens):
-        new_message["content"] += output
+        new_message["content"] = output
         yield AdditionalOutputs(history + [new_message])