Fatal error: Uncaught Error: Interface "pvc\interfaces\frmtr\FrmtrInterface" not found in I:\www\pvcFrmtr\vendor\pvc\interfaces\src\frmtr\numeric\FrmtrIntegerInterface.php:17 Stack trace: #0 {main} thrown in I:\www\pvcFrmtr\vendor\pvc\interfaces\src\frmtr\numeric\FrmtrIntegerInterface.php on line 17