Nginx + PHP-FPM + Error 500 without any log or clue

Hi I moved a WordPress website to my server
It's config:

Also its:

all display errors is active everywhere
it's nginx host config:

Code:

server {
        listen 45.156.186.103:80;
        listen 45.156.186.103:443 ssl http2;

    ssl_protocols TLSv1.3 TLSv1.2;
        ssl_certificate /var/www/clients/client1/web3/ssl/mysite.com-le.crt;
        ssl_certificate_key /var/www/clients/client1/web3/ssl/mysite.com-le.key;

        server_name mysite.com www.mysite.com;

        root   /var/www/mysite.com/web/;
        disable_symlinks if_not_owner from=$document_root;


        index index.html index.htm index.php index.cgi index.pl index.xhtml standard_index.html;


        error_page 400 /error/400.html;
        error_page 401 /error/401.html;
        error_page 403 /error/403.html;
        error_page 404 /error/404.html;
        error_page 405 /error/405.html;
        error_page 500 /error/500.html;
        error_page 502 /error/502.html;
        error_page 503 /error/503.html;
        recursive_error_pages on;
        location = /error/400.html {

            internal;
            auth_basic off;
        }
        location = /error/401.html {

            internal;
            auth_basic off;
        }
        location = /error/403.html {

            internal;
            auth_basic off;
        }
        location = /error/404.html {

            internal;
            auth_basic off;
        }
        location = /error/405.html {

            internal;
            auth_basic off;
        }
        location = /error/500.html {

            internal;
            auth_basic off;
        }
        location = /error/502.html {

            internal;
            auth_basic off;
        }
        location = /error/503.html {

            internal;
            auth_basic off;
        }

        error_log /var/log/ispconfig/httpd/mysite.com/error.log;
        access_log /var/log/ispconfig/httpd/mysite.com/access.log combined;

        location ~ /\. {
            deny all;
        }

        location ^~ /.well-known/acme-challenge/ {
            access_log off;
            log_not_found off;
            auth_basic off;
            root /usr/local/ispconfig/interface/acme/;
            autoindex off;
            index index.html;
            try_files $uri $uri/ =404;
        }

        location = /favicon.ico {
            log_not_found off;
            access_log off;
            expires max;
            add_header Cache-Control "public, must-revalidate, proxy-revalidate";
        }

        location = /robots.txt {
            allow all;
            log_not_found off;
            access_log off;
        }

        location /stats/ {

            index index.html index.php;
            auth_basic "Members Only";
            auth_basic_user_file /var/www/clients/client1/web3/web//stats/.htpasswd_stats;
            add_header Content-Security-Policy "default-src * 'self' 'unsafe-inline' 'unsafe-eval' data:;";
        }

        location ^~ /awstats-icon {
            alias /usr/share/awstats/icon;
        }

        location ~ \.php$ {
            try_files /2a19ffe1b31e630e6abc24bb4385b395.htm @php;
        }

        location @php {
            try_files $uri =404;
            include /etc/nginx/fastcgi_params;
            fastcgi_pass unix:/var/lib/php8.1-fpm/web3.sock;
            fastcgi_index index.php;
            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
            fastcgi_intercept_errors on;
        }
}

The permissions:

And only get this error:

Nothing anywhere logs any clue and I don't understand why I can solve the problem when I don't know what the problem

Code:

# lsb_release -a
No LSB modules are available.
Distributor ID:    Ubuntu
Description:    Ubuntu 22.04.3 LTS
Release:    22.04
Codename:    jammy

ISPConfig Version: 3.2.11p1

 

PHP info is accessible (without changing any permissions)

Also on this server, I have only this website:

I just freshly installed Ispconfig yesterday. move this website to this server and it just returns Error500
so there is no different vhost or maybe I could not understand your mind but now what should I do? How fix the problem? how can I see log? i think the problem is related to PHP-FPM and I chose php7.4 but I config file it's connected to 8.1

Code:

        location @php {
            try_files $uri =404;
            include /etc/nginx/fastcgi_params;
            fastcgi_pass unix:/var/lib/php8.1-fpm/web3.sock;
            fastcgi_index index.php;
            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
            fastcgi_intercept_errors on;
        }

 

I posted all configs in nginx vhost before only Directive I use is PHP to show errors:

 

this site in before server (Cpanel) takes more memory and returns error 503 so I moved it to a new VPS server that I configured with ispconfig and it returned error 500 without any reason

 

I did it but not solved (it returns Error 500) without any log

I can send vps info in your private message to check it yourself

 

Solved by disabling own error documents and I can't understand why it showed Error 500 when WordPress returned an error