Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/users/00/3c/21/home/www/vendor/exsyst/swagger/tests/CollectionsTest.php:26 Stack trace: #0 {main} thrown in /home/users/00/3c/21/home/www/vendor/exsyst/swagger/tests/CollectionsTest.php on line 26