Fatal error: Uncaught Error: Interface 'Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface' not found in /home/eberhardschwarze/public_html/vendor/contao/core-bundle/src/DependencyInjection/Compiler/AddSessionBagsPass.php:22 Stack trace: #0 {main} thrown in /home/eberhardschwarze/public_html/vendor/contao/core-bundle/src/DependencyInjection/Compiler/AddSessionBagsPass.php on line 22