Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /usr/local/www/owncloud/apps/gallery/vendor/symfony/yaml/Tests/DumperTest.php:18 Stack trace: #0 {main} thrown in /usr/local/www/owncloud/apps/gallery/vendor/symfony/yaml/Tests/DumperTest.php on line 18