refactor: base origin

src/routes/chat/GuestBlankPlaceholder.tsx

@@ -2,6 +2,7 @@
 import { useTranslation } from "react-i18next";
 import { useDispatch } from "react-redux";
 import { useNavigate } from "react-router-dom";
+import { BASE_ORIGIN } from "../../app/config";
 import { resetAuthData } from "../../app/slices/auth.data";
 import { useAppSelector } from "../../app/store";
 import QRCode from "../../common/component/QRCode";
@@ -26,7 +27,7 @@ const GuestBlankPlaceholder = () => {
       <div className="flex flex-col gap-2">
         <span className="text-gray-400 dark:text-gray-200 my-3 text-sm">{t("guest_login_tip")}</span>
         <div className="w-44 h-44 self-center mb-4">
-          <QRCode size={1200} link={`https://voce.chat/login?s=${encodeURIComponent(location.origin)}`} />
+          <QRCode size={1200} link={`https://voce.chat/login?s=${encodeURIComponent(BASE_ORIGIN)}`} />
         </div>
         <Button onClick={handleSignIn} className="small">{t("sign_in")}</Button>
       </div>