Fatal error: Uncaught Error: Class "MediaWiki\SpecialPage\FormSpecialPage" not found in C:\xampp\htdocs\extensions\CheckUser\src\Investigate\SpecialInvestigateBlock.php:27 Stack trace: #0 {main} thrown in C:\xampp\htdocs\extensions\CheckUser\src\Investigate\SpecialInvestigateBlock.php on line 27