Update app.py

app.py

@@ -168,4 +168,4 @@ async def chat(request: Request):
             await asyncio.sleep(0)
         yield json.dumps({"message": {"role": "assistant", "content": ""}, "done": True}) + "\n"
 
-    return StreamingResponse(event_stream(), media_type="application/x-ndjson", headers={"X-Accel-Buffering": "no"})
+    return StreamingResponse(event_stream(), media_type="application/x-ndjson", headers={"X-Accel-Buffering": "no"})