Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in I:\www\pvcDisplay\vendor\pvc\frmtr\tests\numeric\FrmtrIntegerTest.php:14 Stack trace: #0 {main} thrown in I:\www\pvcDisplay\vendor\pvc\frmtr\tests\numeric\FrmtrIntegerTest.php on line 14