Fatal error: Uncaught Error: Class "MediaWiki\Tests\Structure\AbstractSchemaTestBase" not found in /usr/www/otte/public/sphunt1/extensions/CheckUser/tests/phpunit/integration/CheckUserSchemaTest.php:12 Stack trace: #0 {main} thrown in /usr/www/otte/public/sphunt1/extensions/CheckUser/tests/phpunit/integration/CheckUserSchemaTest.php on line 12