Correcting auth-provider Error handling returns

gui/rpk-gui/src/providers/auth-provider.tsx

@@ -1,6 +1,7 @@
 import isEmpty from 'lodash/isEmpty';
 import { AuthProvider } from "@refinedev/core";
 import {IUser} from "../interfaces";
+import {OnErrorResponse} from "@refinedev/core/src/contexts/auth/types";
 
 const API_URL = "/api/v1";
 const LOCAL_STORAGE_USER_KEY = "rpk-gui-current-user";
@@ -140,19 +141,21 @@ export const authProvider: AuthProvider = {
   getPermissions: async () => { throw new Error("Not implemented"); },
   onError: async (error) => {
     if (error?.status === 401) {
-      forget_user()
-      return Promise<{
+      forget_user();
+      return {
         redirectTo: "/login",
         logout: true,
         error: { message: "Authentication required" },
-      }>;
+      } as OnErrorResponse;
     }
     else if (error?.status === 403) {
-      return Promise<{
+      return {
         error: { message: "Insufficient credentials" },
-      }>;
+      } as OnErrorResponse;
     }
-    return {};
+    return {
+        error: { message: "Unexpected authentication error" },
+    } as OnErrorResponse;
   },
 };