Fatal error: Uncaught Error: Interface "pvc\interfaces\struct\tree\core\TreenodeCoreInterface" not found in I:\www\pvcStruct\vendor\pvc\interfaces\src\struct\tree\node\TreenodeInterface.php:36 Stack trace: #0 {main} thrown in I:\www\pvcStruct\vendor\pvc\interfaces\src\struct\tree\node\TreenodeInterface.php on line 36