Nginx.service

/lib/systemd/system/nginx.service

nginx.service

Apr 13 07:42:02 SERVER systemd[1]: nginx.service: Failed to parse PID from file /run/nginx.pid: Invalid argument
Apr 13 10:39:06 SERVER systemd[1]: nginx.service: Failed with result 'timeout'.

Seems not to be an important error, you can verify if nginx is running executing:  systemctl status nginx

See also

• Web server: Nginx: /etc/nginx/nginx.conf, nginx -t, Nginx logs, Nginx change log, PHP, php-fpm, Let's encrypt, Nginx directives, Reverse Proxy, Configure HTTP redirection Nginx, Return, proxy_pass (Reverse proxy), ngx_http_rewrite_module, /etc/nginx/sites-enabled/, error.log, access.log, /nginx status, AIO