Fatal error: Uncaught Error: Interface "GrahamCampbell\Manager\ManagerInterface" not found in C:\Apache24_x64\htdocs\ex-vak\vendor\graham-campbell\manager\src\AbstractManager.php:26 Stack trace: #0 {main} thrown in C:\Apache24_x64\htdocs\ex-vak\vendor\graham-campbell\manager\src\AbstractManager.php on line 26