Fatal error: Uncaught Error: Interface "Magento\Framework\Event\ObserverInterface" not found in /home/websupportontdem/public_html/uscabinetonline.websupportondemo.com/old/vendor/magento/module-adobe-ims/Observer/FlushUsersTokensObserver.php:19 Stack trace: #0 {main} thrown in /home/websupportontdem/public_html/uscabinetonline.websupportondemo.com/old/vendor/magento/module-adobe-ims/Observer/FlushUsersTokensObserver.php on line 19