we got a dhcp server. The computer got network, the path to the efi file is connected.
I have no access to the dhcp settings that i could set the next-server or anything else.
But i think the efi file maybe is corrupt? i have tried to edit the efi file, but then the boot stick does not work anymore.
@christop Can you post your apache error log (or php-fpm www-error.log if redhat based) showing the message immediately after the HTTP 5xx Server Error.