( ! ) Fatal error: Class 'Symfony\Component\DependencyInjection\Extension\Extension' not found in /var/www/html/vendor/symfony/http-kernel/Tests/Fixtures/ExtensionPresentBundle/DependencyInjection/ExtensionPresentExtension.php on line 17
Call Stack
#	Time	Memory	Function	Location
1	0.0001	386416	{main}( )	.../ExtensionPresentExtension.php:0