Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Loader\XmlFileLoader" not found in /var/www/html/vendor/doctrine/doctrine-bundle/DependencyInjection/DoctrineExtension.php:116 Stack trace: #0 /var/www/html/vendor/doctrine/doctrine-bundle/DependencyInjection/DoctrineExtension.php(88): Doctrine\Bundle\DoctrineBundle\DependencyInjection\DoctrineExtension->dbalLoad(Array, Object(Symfony\Component\DependencyInjection\Compiler\MergeExtensionConfigurationContainerBuilder)) #1 /var/www/html/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/Compiler/MergeExtensionConfigurationPass.php(76): Doctrine\Bundle\DoctrineBundle\DependencyInjection\DoctrineExtension->load(Array, Object(Symfony\Component\DependencyInjection\Compiler\MergeExtensionConfigurationContainerBuilder)) #2 /var/www/html/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/Compiler/Compiler.php(94): Symfony\Component\DependencyInjection\Compiler\MergeExtensionConfigurationPass->process(Object(PrestaShop\PrestaShop\Adapter\Container\LegacyContainerBuilder)) #3 /var/www/html/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php(762): Symfony\Component\DependencyInjection\Compiler\Compiler->compile(Object(PrestaShop\PrestaShop\Adapter\Container\LegacyContainerBuilder)) #4 /var/www/html/src/Adapter/ContainerBuilder.php(189): Symfony\Component\DependencyInjection\ContainerBuilder->compile() #5 /var/www/html/src/Adapter/ContainerBuilder.php(137): PrestaShop\PrestaShop\Adapter\ContainerBuilder->compileContainer() #6 /var/www/html/src/Adapter/ContainerBuilder.php(103): PrestaShop\PrestaShop\Adapter\ContainerBuilder->buildContainer('front') #7 /var/www/html/classes/controller/FrontController.php(2151): PrestaShop\PrestaShop\Adapter\ContainerBuilder::getContainer('front', true) #8 /var/www/html/classes/controller/Controller.php(204): FrontControllerCore->buildContainer() #9 /var/www/html/classes/controller/FrontController.php(284): ControllerCore->init() #10 /var/www/html/controllers/front/listing/BestSalesController.php(50): FrontControllerCore->init() #11 /var/www/html/classes/controller/Controller.php(300): BestSalesControllerCore->init() #12 /var/www/html/classes/Dispatcher.php(510): ControllerCore->run() #13 /var/www/html/index.php(28): DispatcherCore->dispatch() #14 {main} thrown in /var/www/html/vendor/doctrine/doctrine-bundle/DependencyInjection/DoctrineExtension.php on line 116