( ! ) Fatal error: Class 'Symfony\Component\DependencyInjection\Dumper\Dumper' not found in /var/www/clients/client0/web4/web/vendor/symfony/dependency-injection/Dumper/XmlDumper.php on line 28
Call Stack
#	Time	Memory	Function	Location
1	0.0000	361216	{main}( )	.../XmlDumper.php:0