accounts: descriptive error when no template found

lang/admin/en-us.json

@@ -158,6 +158,7 @@
         "errorSendWelcomeEmail": "Failed to send welcome message (check console/logs)",
         "errorApplyUpdate": "Failed to apply update, try manually.",
         "errorCheckUpdate": "Failed to check for update.",
+        "errorNoReferralTemplate": "Profile doesn't contain referral template, add one in settings.",
         "updateAvailable": "A new update is available, check settings.",
         "noUpdatesAvailable": "No new updates available."
     },

ts/modules/accounts.ts

@@ -1794,7 +1794,7 @@ export class accountsList {
                 if (req.readyState == 4) {
                     toggleLoader(button);
                     if (req.status == 400) {
-                        window.notifications.customError("unknownError", window.lang.notif("errorUnknown"));
+                        window.notifications.customError("noReferralTemplateError", window.lang.notif("errorNoReferralTemplate"));
                     } else if (req.status == 200 || req.status == 204) {
                         window.notifications.customSuccess("enableReferralsSuccess", window.lang.quantity("appliedSettings", list.length));
                     }