Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in I:\www\pvcDisplay\vendor\pvc\html\tests\unit_tests\val_tester\TitleTesterTest.php:13 Stack trace: #0 {main} thrown in I:\www\pvcDisplay\vendor\pvc\html\tests\unit_tests\val_tester\TitleTesterTest.php on line 13