Auth.js

import { createSlice } from "@reduxjs/toolkit";

export const authSlice = createSlice({
  name: "auth",
  initialState: {
    isAuthenticated: false,
    user: {},
  },
  reducers: {
    setUser: (state, { payload }) => {
      state.user = payload.user;
      state.isAuthenticated = true;
    },
    logout: (state) => {
      state.user = {};
      state.isAuthenticated = false;
    },
  },
});

export const { setUser, logout } = authSlice.actions;
export default authSlice.reducer;

index.js（存储）

import { configureStore } from "@reduxjs/toolkit";
import authReducer from "./auth.js";

export default configureStore({
  reducer: {
    auth: authReducer,
  },
});

交易表单. js
const { categories } = useSelector((state) => state.auth.user);

当我登录时出现错误，但重新加载页面时错误消失。如何修复错误