Fatal error: Uncaught Error: Interface 'Contao\CoreBundle\Picker\PickerProviderInterface' not found in /home/eberhardschwarze/public_html/vendor/contao/core-bundle/src/Picker/DcaPickerProviderInterface.php:21 Stack trace: #0 {main} thrown in /home/eberhardschwarze/public_html/vendor/contao/core-bundle/src/Picker/DcaPickerProviderInterface.php on line 21