Website on Plesk server and sudden 500 error
After Apache got updated on our Ubuntu distro, we suddenly started have Error 500 of Plesk shown on all our sites.
AH10292: Invalid proxy UDS filename (proxy:unix:///var/www/vhosts/system/example.com/php-fpm.sock|fcgi://127.0.0.1:9000/var/www/vhosts/example.com/httpdocs/public/index.php)
Then handling of UDS URIs to proxy connections from Apache to PHP-FPM seems to have been modified and that resulted with Error on Plesk.