Fatal error: Uncaught Error: Class 'Magento\Backend\Model\Locale\Resolver\Proxy' not found in /var/www/mastro7.it/www/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php:121 Stack trace: #0 /var/www/mastro7.it/www/vendor/magento/framework/ObjectManager/Factory/Compiled.php(108): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject('Magento\\Backend...', Array) #1 /var/www/mastro7.it/www/vendor/magento/framework/ObjectManager/Factory/Compiled.php(150): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Backend...') #2 /var/www/mastro7.it/www/vendor/magento/framework/ObjectManager/Factory/Compiled.php(79): Magento\Framework\ObjectManager\Factory\Compiled->get('Magento\\Backend...') #3 /var/www/mastro7.it/www/vendor/magento/framework/ObjectManager/Factory/Compiled.php(150): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Backend...') #4 /var/www/mastro7.it/www/vendor/magento/framework/ObjectManager/Factory/Compiled.php(79): Magento\Framework\ObjectManager\Fac in /var/www/mastro7.it/www/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php on line 121