Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\Apache24\htdocs\vendor.old\lcobucci\jwt\test\unit\SignatureTest.php:14 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\vendor.old\lcobucci\jwt\test\unit\SignatureTest.php on line 14