$out = $context->getOutput();
$tag = $data['HiddenTag'];
- $status = call_user_func( [ 'ChangeTags', "{$form->tagAction}TagWithChecks" ],
+ $status = call_user_func( [ ChangeTags::class, "{$form->tagAction}TagWithChecks" ],
$tag, $data['Reason'], $context->getUser(), true );
if ( $status->isGood() ) {