Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /var/www/develop/www/php/vendor/phar-io/version/tests/Unit/AndVersionConstraintGroupTest.php:18 Stack trace: #0 {main} thrown in /var/www/develop/www/php/vendor/phar-io/version/tests/Unit/AndVersionConstraintGroupTest.php on line 18