if (empty($this->invite)) {
// TRANS: Client error displayed when trying to register to an invite-only site without a valid invitation.
$this->clientError(_('Sorry, invalid invitation code.'), 401);
if (empty($this->invite)) {
// TRANS: Client error displayed when trying to register to an invite-only site without a valid invitation.
$this->clientError(_('Sorry, invalid invitation code.'), 401);