Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\Apache24\htdocs\vendor.old\lcobucci\jwt\test\unit\Signer\Ecdsa\MultibyteStringConverterTest.php:13 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\vendor.old\lcobucci\jwt\test\unit\Signer\Ecdsa\MultibyteStringConverterTest.php on line 13