Fatal error: Uncaught Error: Class "MediaWiki\Tests\HookContainer\HookRunnerTestBase" not found in /var/www/html/extensions/FlaggedRevs/tests/phpunit/unit/FlaggedRevsHookRunnerTest.php:8 Stack trace: #0 {main} thrown in /var/www/html/extensions/FlaggedRevs/tests/phpunit/unit/FlaggedRevsHookRunnerTest.php on line 8