Extension fails to load on MediaWiki 1.43

Whenever the extension is loaded on MediaWiki 1.43, the following error is given:

MediaWiki internal error.

Original exception: [fa9ed17046e665423fdc31a6] /index.php?title=Speciaal:Aanmelden&returnto=Hoofdpagina&returntoquery=action%3Dedit Error: Interface "MediaWiki\Hook\BeforeParserFetchTemplateAndtitleHook" not found
Backtrace:
from /var/www/html/extensions/WikiGuard/src/MediaWiki/Hooks/PerformActionHandler.php(53)
#0 /var/www/html/includes/AutoLoader.php(226): require_once()
#1 /var/www/html/vendor/wikimedia/object-factory/src/ObjectFactory.php(240): AutoLoader::autoload(string)
#2 /var/www/html/vendor/wikimedia/object-factory/src/ObjectFactory.php(149): Wikimedia\ObjectFactory\ObjectFactory::getObjectFromSpec(array, array)
#3 /var/www/html/includes/HookContainer/HookContainer.php(256): Wikimedia\ObjectFactory\ObjectFactory->createObject(array)
#4 /var/www/html/includes/HookContainer/HookContainer.php(348): MediaWiki\HookContainer\HookContainer->makeExtensionHandlerCallback(string, array, array)
#5 /var/www/html/includes/HookContainer/HookContainer.php(524): MediaWiki\HookContainer\HookContainer->normalizeHandler(string, array, array)
#6 /var/www/html/includes/HookContainer/HookContainer.php(146): MediaWiki\HookContainer\HookContainer->getHandlers(string, array)
#7 /var/www/html/includes/HookContainer/HookRunner.php(2027): MediaWiki\HookContainer\HookContainer->run(string, array)
#8 /var/www/html/includes/Permissions/PermissionManager.php(553): MediaWiki\HookContainer\HookRunner->onGetUserPermissionsErrors(MediaWiki\Title\Title, MediaWiki\User\User, string, string)
#9 /var/www/html/includes/Permissions/PermissionManager.php(507): MediaWiki\Permissions\PermissionManager->checkPermissionHooks(string, MediaWiki\User\User, MediaWiki\Permissions\PermissionStatus, string, bool, MediaWiki\Title\Title)
#10 /var/www/html/includes/Permissions/UserAuthority.php(372): MediaWiki\Permissions\PermissionManager->getPermissionStatus(string, MediaWiki\User\User, MediaWiki\Title\Title, string)
#11 /var/www/html/includes/Permissions/UserAuthority.php(232): MediaWiki\Permissions\UserAuthority->internalCan(string, string, MediaWiki\Title\Title, MediaWiki\Permissions\PermissionStatus, int)
#12 /var/www/html/includes/user/User.php(3318): MediaWiki\Permissions\UserAuthority->authorizeRead(string, MediaWiki\Title\Title, MediaWiki\Permissions\PermissionStatus)
#13 /var/www/html/includes/actions/ActionEntryPoint.php(405): MediaWiki\User\User->authorizeRead(string, MediaWiki\Title\Title, MediaWiki\Permissions\PermissionStatus)
#14 /var/www/html/includes/actions/ActionEntryPoint.php(146): MediaWiki\Actions\ActionEntryPoint->performRequest()
#15 /var/www/html/includes/MediaWikiEntryPoint.php(200): MediaWiki\Actions\ActionEntryPoint->execute()
#16 /var/www/html/index.php(58): MediaWiki\MediaWikiEntryPoint->run()
#17 {main}