if (DI::args()->getArgc() > 1) {
$owner = User::getOwnerDataByNick(DI::args()->getArgv()[1]);
+ if (!$owner) {
+ throw new HTTPException\NotFoundException(DI::l10n()->t('User not found.'));
+ }
$is_owner = (local_user() && (local_user() == $owner['uid']));