I have done a clean install of OSTicket 1.11 on a DirectAdmin CentOS server. The server runs Apache and PHP 7.2 under php-fpm. The server conforms to the minimal conditions needed for installation.
Installation itself went without problems and the OS-Ticket frontend shows up alright. But both client login and login fo the Staff Control Panel give the "422 unprocessable Entity" error message. I'm stuck as the PHP error log provides no addiotional information either.
I can not find references to this issue on the forum, nor a referenc as to how to solve this. Does anyone have an idea what might be going on here and how I can solve this?
Many thanks in advance,
Erik