服务器用作网关或代理服务器并尝试满足请求时，从所访问的上游服务器接收到的响应无效。

The server, while acting as a gateway or proxy, received an invalid response from the upstream server it accessed in attempting to fulfill the request.

youdao

服务器用作网关或代理服务器并尝试满足请求时，从所访问的上游服务器接收到的响应无效。

The server, while acting as a gateway or proxy, received an invalid response from the upstream server it accessed in attempting to fulfill the request.

youdao