Fatal error: Uncaught Error: Interface "MediaWiki\Extension\CodeEditor\Hooks\CodeEditorGetPageLanguageHook" not found in C:\xampp\htdocs\extensions\Gadgets\includes\CodeEditorHooks.php:11 Stack trace: #0 {main} thrown in C:\xampp\htdocs\extensions\Gadgets\includes\CodeEditorHooks.php on line 11