Fatal error: Uncaught Error: Class 'Contao\CoreBundle\Exception\ResponseException' not found in /home/eberhardschwarze/public_html/vendor/contao/core-bundle/src/Exception/NoContentResponseException.php:20 Stack trace: #0 {main} thrown in /home/eberhardschwarze/public_html/vendor/contao/core-bundle/src/Exception/NoContentResponseException.php on line 20