Fatal error: Uncaught Error: Class "pvc\validator\val_tester\callable\CallableTester" not found in I:\www\pvcValidator\src\val_tester\ctype\CTypeTesterAlphaNumeric.php:18 Stack trace: #0 {main} thrown in I:\www\pvcValidator\src\val_tester\ctype\CTypeTesterAlphaNumeric.php on line 18