Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/littledr/music.loading-data.com/vendor/lstrojny/functional-php/tests/Functional/AbstractTestCase.php:21 Stack trace: #0 {main} thrown in /home/littledr/music.loading-data.com/vendor/lstrojny/functional-php/tests/Functional/AbstractTestCase.php on line 21