if (!is_writable(DI::basePath() . '/view/smarty3')) {
$admin_message = DI::l10n()->t('The folder view/smarty3/ must be writable by webserver.');
DI::logger()->critical($admin_message);
- $message = is_site_admin() ?
+ $message = DI::app()->isSiteAdmin() ?
$admin_message :
DI::l10n()->t('Friendica can\'t display this page at the moment, please contact the administrator.');
throw new ServiceUnavailableException($message);