Hello! Ispconfig version 3.2 Debian buster Apache 2.4.38 I am using multiple versions of PHP and followed the instructions with the sury.org repository to install all versions from 5.6 to 8.0. I am using update-alternatives and a2dismod / a2enmod to change PHP version. I am in PHP7.4 on the server by default. After updating diferent version of PHP, ISPConfig could be opened, I added a new version PHP8.0 under System> Additional PHP Versions. Since then I get the ISPConfig logo displayed and the logout-admin button. I found the same report, but it asks me to revert to the default PHP version with no result. Report link here Code: 1/ result of the command php -v on the server: PHP 7.4.16 (cli) (built: Mar 5 2021 08:36:10) (NTS) Copyright (c) The PHP Group Zend Engine v3.4.0, Copyright (c) Zend Technologies with Zend OPcache v7.4.16, Copyright (c), by Zend Technologies. 2/ phpinfo on a site: PHP Version 7.4.16 same version as on the server. 3/ result of the command php --ini on the server: Configuration File (php.ini) Path: /etc/php/7.4/cli Loaded Configuration File: /etc/php/7.4/cli/php.ini Scan for additional .ini files in: /etc/php/7.4/cli/conf.d Additional .ini files parsed: /etc/php/7.4/cli/conf.d/10-mysqlnd.ini, 4/ phpinfo sur l'interface Ispconfig PHP Version 8.0.3. I cannot force the management interface of Ispconfig to switch to php7.4 There seems to be a compatibility issue with version 3.2 of Ispconfig and PHP8.0. Thank you in advance for your answers.