Fatal error: Uncaught Error: Class 'Contao\CoreBundle\ServiceAnnotation\AbstractFragmentAnnotation' not found in /home/benjamincb/demos/acdg-site/vendor/contao/core-bundle/src/ServiceAnnotation/ContentElement.php:33 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg-site/vendor/contao/core-bundle/src/ServiceAnnotation/ContentElement.php on line 33