( ! ) Fatal error: Uncaught Error: Interface "Symfony\Component\Security\Core\Role\RoleHierarchyInterface" not found in /home/homes/marienoellerichmond/sites/Symfony-recipes/my_project_directory/vendor/symfony/security-core/Role/RoleHierarchy.php on line 19
( ! ) Error: Interface "Symfony\Component\Security\Core\Role\RoleHierarchyInterface" not found in /home/homes/marienoellerichmond/sites/Symfony-recipes/my_project_directory/vendor/symfony/security-core/Role/RoleHierarchy.php on line 19
Call Stack
#	Time	Memory	Function	Location
1	0.0035	361688	{main}( )	.../RoleHierarchy.php:0