如题，一点击后台的备份，谷歌浏览器就会显示请检查互联网连接状况

而后台网站错误日志就会显示

2025/02/11 01:30:58 [error] 8361#0: *348889 upstream prematurely closed FastCGI request while reading upstream, client: 112.239.78.193, server: 博客域名, request: ＂POST /index.php/action/backup?_=a68f700bd66c2a52daba4c6655616eee HTTP/2.0＂, upstream: ＂fastcgi://unix:/tmp/php-cgi-80.sock:＂, host: ＂博客域名＂, referrer: ＂https://博客域名/admin/backup.php＂ 2025/02/11 01:32:48 [error] 8522#0: *348899 upstream prematurely closed FastCGI request while reading upstream, client: 112.239.78.193, server: 博客域名, request: ＂POST /index.php/action/backup?_=a68f700bd66c2a52daba4c6655616eee HTTP/2.0＂, upstream: ＂fastcgi://unix:/tmp/php-cgi-81.sock:＂, host: ＂博客域名＂, referrer: ＂https://博客域名/admin/backup.php＂