在我的电子商务网站Nextjs中，我试图使用redux实现添加到购物篮功能，但错误“无法读取未定义的属性（阅读'items'）：export const selectItems =（state）=〉state.basket.items;“不断发生。下面是我的代码
Store.js

import { configureStore } from "@reduxjs/toolkit";
import { basketReducer } from "./Slices/basketSlice";

export const store = configureStore({
  reducer: {
    basket: basketReducer,
  },
});

Slices/basketSlice.js

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

// const initialState = {
//   items: [],
// };

export const basketSlice = createSlice({
  name: "basket",
  initialState: { items: [] },
  reducers: {
    addToBasket: (state, action) => {
      state.items = [...state.items, action.payload];
    },
    removeFromBasket: (state, action) => {},
  },
});

// Action creators are generated for each case reducer function
export const { addToBasket, removeFromBasket } = basketSlice.actions;
export const selectItems = (state) => state.basket.items;
export default basketSlice.reducer;