ThinkPHP V5.1.18 部署到服务器上如何去掉public/index.php也能访问

http://abc.com/public/index.p...

现在需要按如上链接链接规则才能访问，我想要去掉/public/index.php像如下链接一样能访问

http://abc.com/index/index/index

下面是我的Nginx配置文件，如果我把配置文件里root这一项改成/var/wwwroot/abc/public时，访问http://abc.com/index.php就报5...，可我已经把thinkphp的debug设为true了，也没有报详细错误。

server
    {
        listen 80;
        server_name abc.com ;
        index index.html index.htm index.php default.html default.htm default.php;
        root  /var/wwwroot/abc;

        location / {
            if (!-e $request_filename) {
                rewrite ^(.*)$ /index.php?s=/$1 last;
                break;
            }
        }
        
        location ~ [^/]\.php(/|$)
        {
            fastcgi_pass  unix:/tmp/php-cgi.sock;
            fastcgi_index index.php;
            include fastcgi.conf;
            include pathinfo.conf;
        }

        location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$
        {
            expires      30d;
        }

        location ~ .*\.(js|css)?$
        {
            expires      12h;
        }

        location ~ /.well-known {
            allow all;
        }

        location ~ /\.
        {
            deny all;
        }

        access_log  /var/wwwlogs/abc.com.log;
    }