Fatal error: Uncaught Error: Class 'Magento\Persistent\Observer\ApplyPersistentDataObserver' not found in /var/www/lib/internal/Magento/Framework/ObjectManager/Factory/AbstractFactory.php:121 Stack trace: #0 /var/www/lib/internal/Magento/Framework/ObjectManager/Factory/Compiled.php(108): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject('Magento\\Persist...', Array) #1 /var/www/lib/internal/Magento/Framework/ObjectManager/ObjectManager.php(70): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Persist...') #2 /var/www/lib/internal/Magento/Framework/Event/ObserverFactory.php(33): Magento\Framework\ObjectManager\ObjectManager->get('Magento\\Persist...') #3 /var/www/lib/internal/Magento/Framework/Event/Invoker/InvokerDefault.php(72): Magento\Framework\Event\ObserverFactory->get('Magento\\Persist...') #4 /var/www/lib/internal/Magento/Framework/Event/Manager.php(66): Magento\Framework\Event\Invoker\InvokerDefault->dispatch(Array, Object(Magento\Framework\Event\Observer)) #5 /var/www/generat in /var/www/lib/internal/Magento/Framework/ObjectManager/Factory/AbstractFactory.php on line 121