Fatal error: Uncaught Error: Interface 'Contao\CoreBundle\Fragment\FragmentRegistryInterface' not found in /home/benjamincb/demos/acdg-site/vendor/contao/core-bundle/src/Fragment/FragmentRegistry.php:15 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg-site/vendor/contao/core-bundle/src/Fragment/FragmentRegistry.php on line 15