Fatal error: Uncaught Error: Class 'Symfony\Component\Yaml\Yaml' not found in /home/pacawcvv/public_html/src/PrestaShopBundle/DependencyInjection/Config/ConfigYamlLoader.php:47 Stack trace: #0 /home/pacawcvv/public_html/src/Adapter/Container/DoctrineBuilderExtension.php(66): PrestaShopBundle\DependencyInjection\Config\ConfigYamlLoader->load('config_legacy_d...') #1 /home/pacawcvv/public_html/src/Adapter/ContainerBuilder.php(171): PrestaShop\PrestaShop\Adapter\Container\DoctrineBuilderExtension->build(Object(PrestaShop\PrestaShop\Adapter\Container\LegacyContainerBuilder)) #2 /home/pacawcvv/public_html/src/Adapter/ContainerBuilder.php(129): PrestaShop\PrestaShop\Adapter\ContainerBuilder->compileContainer() #3 /home/pacawcvv/public_html/src/Adapter/ContainerBuilder.php(95): PrestaShop\PrestaShop\Adapter\ContainerBuilder->buildContainer('front') #4 /home/pacawcvv/public_html/classes/controller/FrontController.php(1992): PrestaShop\PrestaShop\Adapter\ContainerBuilder::getContainer('front', true) #5 /home/pacawcvv/public_html/c in /home/pacawcvv/public_html/src/PrestaShopBundle/DependencyInjection/Config/ConfigYamlLoader.php on line 47