Fatal error: Uncaught Error: Class "UploadBase" not found in /var/www/html/extensions/SemanticMediaWiki/tests/phpunit/Utils/File/LocalFileUpload.php:15 Stack trace: #0 {main} thrown in /var/www/html/extensions/SemanticMediaWiki/tests/phpunit/Utils/File/LocalFileUpload.php on line 15