Update chain_app.py

chain_app.py

@@ -2205,6 +2205,8 @@ async def main(message: cl.Message):
         ).send()
 
     elif chat_profile == 'Qwen2-57B':
+        msg = cl.Message(content="")
+        await msg.send()
         client = Client("Qwen/Qwen2-57b-a14b-instruct-demo", hf_token=hf_token)
         result = client.predict(
             query=message.content,
@@ -2213,7 +2215,7 @@ async def main(message: cl.Message):
         )
 
         for i in list(result[1][0][1]):
-            msg.stream_token(i)
+            await msg.stream_token(i)
             
         # await cl.Message(
         #     content=result[1][0][1]