Follow up #3263 (#3847)

src/components/settings/Backup.vue

@@ -121,9 +121,6 @@
 <script>
 import Confirm from "../../components/Confirm.vue";
 import dayjs from "dayjs";
-import { useToast } from "vue-toastification";
-
-const toast = useToast();
 
 export default {
     components: {
@@ -200,11 +197,7 @@ export default {
                     (res) => {
                         this.processing = false;
 
-                        if (res.ok) {
-                            toast.success(res.msg);
-                        } else {
-                            toast.error(res.msg);
-                        }
+                        this.$root.toastRes(res);
                     }
                 );
             };