Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in I:\www\pvcMsg\vendor\pvc\frmtr\tests\boolean\FrmtrBooleanTest.php:15 Stack trace: #0 {main} thrown in I:\www\pvcMsg\vendor\pvc\frmtr\tests\boolean\FrmtrBooleanTest.php on line 15