Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\inetpub\wwwroot\mantis\vendor\nikic\fast-route\test\Dispatcher\DispatcherTest.php:8 Stack trace: #0 {main} thrown in C:\inetpub\wwwroot\mantis\vendor\nikic\fast-route\test\Dispatcher\DispatcherTest.php on line 8