Fatal error: Uncaught Error: Class "Symfony\Component\Form\AbstractType" not found in /home/html/gamerall.com/src/PrestaShopBundle/Form/Admin/Type/CommonAbstractType.php:37 Stack trace: #0 /home/html/gamerall.com/vendor/composer/ClassLoader.php(576): include() #1 /home/html/gamerall.com/vendor/composer/ClassLoader.php(427): Composer\Autoload\{closure}() #2 /home/html/gamerall.com/src/PrestaShopBundle/Form/Admin/Type/TranslatorAwareType.php(36): Composer\Autoload\ClassLoader->loadClass() #3 /home/html/gamerall.com/vendor/composer/ClassLoader.php(576): include('...') #4 /home/html/gamerall.com/vendor/composer/ClassLoader.php(427): Composer\Autoload\{closure}() #5 /home/html/gamerall.com/src/PrestaShopBundle/Form/Admin/Type/FormattedTextareaType.php(39): Composer\Autoload\ClassLoader->loadClass() #6 /home/html/gamerall.com/vendor/composer/ClassLoader.php(576): include('...') #7 /home/html/gamerall.com/vendor/composer/ClassLoader.php(427): Composer\Autoload\{closure}() #8 /home/html/gamerall.com/classes/Configuration.php(229): Composer\Autoload\ClassLoader->loadClass() #9 /home/html/gamerall.com/classes/Configuration.php(303): ConfigurationCore::get() #10 /home/html/gamerall.com/classes/shop/Shop.php(402): ConfigurationCore::getMultiShopValues() #11 /home/html/gamerall.com/config/config.inc.php(122): ShopCore::initialize() #12 /home/html/gamerall.com/index.php(40): require_once('...') #13 {main} thrown in /home/html/gamerall.com/src/PrestaShopBundle/Form/Admin/Type/CommonAbstractType.php on line 37