Fatal error: Uncaught Error: Class 'Doctrine\Migrations\AbstractMigration' not found in /var/www/vhosts/www.thomas-bartholomaeus.de/content/neoscms/Packages/Application/Neos.ContentRepository/Migrations/Mysql/Version20121001201712.php:11 Stack trace: #0 {main} thrown in /var/www/vhosts/www.thomas-bartholomaeus.de/content/neoscms/Packages/Application/Neos.ContentRepository/Migrations/Mysql/Version20121001201712.php on line 11