Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\Apache24\htdocs\BookStack\vendor\league\oauth1-client\tests\RsaClientCredentialsTest.php:10 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\BookStack\vendor\league\oauth1-client\tests\RsaClientCredentialsTest.php on line 10