diff --git a/app/src/constants/errors/validate.ts b/app/src/constants/errors/validate.ts
new file mode 100644
index 00000000..b1d9ede9
--- /dev/null
+++ b/app/src/constants/errors/validate.ts
@@ -0,0 +1,3 @@
+export default {
+ 406: () => $gettext('Requested with wrong parameters'),
+}
diff --git a/app/src/views/preference/tabs/ExternalNotify.vue b/app/src/views/preference/tabs/ExternalNotify.vue
index 2dc061b5..6638d575 100644
--- a/app/src/views/preference/tabs/ExternalNotify.vue
+++ b/app/src/views/preference/tabs/ExternalNotify.vue
@@ -1,8 +1,8 @@