Fatal error: Uncaught Error: Class 'Contao\InstallationBundle\Database\AbstractVersionUpdate' not found in /home/likach/contao44.lika.ch/vendor/contao/installation-bundle/src/Database/Version350Update.php:18 Stack trace: #0 {main} thrown in /home/likach/contao44.lika.ch/vendor/contao/installation-bundle/src/Database/Version350Update.php on line 18