Fatal error: Uncaught Error: Interface "Kolab2FA\Log\Logger" not found in /usr/local/www/roundcube/plugins/roundcube-plugin-kolab-2fa/lib/Kolab2FA/Log/RcubeLogger.php:29 Stack trace: #0 {main} thrown in /usr/local/www/roundcube/plugins/roundcube-plugin-kolab-2fa/lib/Kolab2FA/Log/RcubeLogger.php on line 29