Fatal error: Uncaught Error: Interface "Magento\Framework\Event\ObserverInterface" not found in /var/www/magento/html/app/code/MagicToolbox/MagicZoomPlus/Observer/FixLayoutBefore.php:9
Stack trace:
#0 {main}
thrown in /var/www/magento/html/app/code/MagicToolbox/MagicZoomPlus/Observer/FixLayoutBefore.php on line 9