Fatal error: Uncaught Error: Class 'Contao\CoreBundle\DataContainer\PaletteManipulator' not found in /home/eberhardschwarze/public_html/vendor/contao-bootstrap/grid/src/Resources/contao/dca/tl_theme.php:15 Stack trace: #0 {main} thrown in /home/eberhardschwarze/public_html/vendor/contao-bootstrap/grid/src/Resources/contao/dca/tl_theme.php on line 15