Fatal error: Uncaught Error: Interface "TYPO3\CMS\Backend\Template\Components\ComponentInterface" not found in /home/cmsshareacopy/public_html/TYPO3/vendor/typo3/cms-backend/Classes/Template/Components/Buttons/ButtonInterface.php:31 Stack trace: #0 {main} thrown in /home/cmsshareacopy/public_html/TYPO3/vendor/typo3/cms-backend/Classes/Template/Components/Buttons/ButtonInterface.php on line 31