What happened? Your origin server reported a Bad Gateway error. Please contact your hosting provider to troubleshoot these common causes on your origin web server: Ensure the origin server responds to the hostname and domain within the visitor's URL that generated the 502 or 504 error. Investigate excessive server loads, crashes, or network failures. Identify and resolve any applications or services that have timed out or are being blocked.
原文中文
发生了什么？您的源服务器报告了 Bad Gateway 错误。请联系您的托管服务提供商，针对源 Web 服务器的以下常见原因进行故障排除： 确保源服务器能够响应产生 502 或 504 错误的访问者 URL 中的主机名和域名。 调查服务器是否存在负载过高、系统崩溃或网络故障。 识别并解决已超时或被拦截的应用程序或服务。
