Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in I:\www\pvcDisplay\vendor\pvc\parser\tests\boolean\ParserBooleanLooseTest.php:18 Stack trace: #0 {main} thrown in I:\www\pvcDisplay\vendor\pvc\parser\tests\boolean\ParserBooleanLooseTest.php on line 18