Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/dahstfi/www/vendor/dahst/prodalix/tests/Collections/SupplierCollectionTest.php:18 Stack trace: #0 {main} thrown in /home/dahstfi/www/vendor/dahst/prodalix/tests/Collections/SupplierCollectionTest.php on line 18