phpstudy:upstream sent unsupported FastCGI protocol version: 72 while reading response header from

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本文记录了解决在PHPStudy环境下，HTTPS端口443访问出现502错误的过程。通过修改Nginx配置文件中的fastcgi_pass参数，将端口从9001更改为9000，成功解决了问题。

本地环境是在windows上安装了phpstudy, 今天打开电脑突然访问本地页面， 502!, 好端端的怎么突然就502了呢，什么也没改啊，别的域名都可以正常访问，唯独这个 https的端口为443的报502，

打开错误日志error.log:

2020/04/07 15:57:31 [error] 8352#12920: *1 upstream sent unsupported FastCGI protocol version: 72 while reading response header from upstream, client: 127.0.0.1, server: gitXXX.xcar.com.cn, request: "GET /auto/index.php?r=newxxxr/xxx/index&pserid=8 HTTP/1.1", upstream: "fastcgi://127.0.0.1:9001", host: "gitxxx.xcar.com.cn"
2020/04/07 15:57:31 [error] 8352#12920: *1 upstream sent unsupported FastCGI protocol version: 72 while reading response header from upstream, client: 127.0.0.1, server: gitnewcar.xcar.com.cn, request: "GET /auo/index.php?r=near/sx/index&pserid=8 HTTP/1.1", upstream: "fastcgi://127.0.0.1:9001", host: "gitnr.xcar.com.cn"

去网上搜了半天，然后改了一个配置好了；

location ~ \.php(.*)$ {
            fastcgi_pass   127.0.0.1:9000;
            fastcgi_index index.php;
            fastcgi_split_path_info ^((?U).+\.php)(/?.+)$;
            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
            fastcgi_param PATH_INFO $fastcgi_path_info;
            fastcgi_param PATH_TRANSLATED $document_root$fastcgi_path_info;
            include        fastcgi_params;
        }

fasctcgi_pass, 由原来的9001，改成了9000，解决！