fix

app.py

@@ -64,7 +64,7 @@ def stream_chat(
         return
 
     client = openai.OpenAI(api_key=api_key, base_url=base_url)
-
+    msgs=[]
     for u, a in history:
         msgs += [{"role": "user", "content": u},
                  {"role": "assistant", "content": a}]