Update app.py

app.py

@@ -147,7 +147,7 @@ async def proxy_to_node(
 
     new_headers["Transfer-Encoding"] = "chunked"
 
-    return StreamingResponse(response.aiter_raw(), headers=new_headers)
+    return StreamingResponse(r.aiter_raw(), headers=new_headers)
 
 
 @app.api_route(