Fatal error: Uncaught Error: Class "MediaWikiUnitTestCase" not found in /var/www/html/extensions/MobileFrontend/tests/phpunit/unit/devices/DeviceDetectorServiceTest.php:14 Stack trace: #0 {main} thrown in /var/www/html/extensions/MobileFrontend/tests/phpunit/unit/devices/DeviceDetectorServiceTest.php on line 14