我在redux工具包切片中使用了localStorage.setItem（），它可以正常工作，但是当我想在侧边的redux工具包切片中使用localStorage.getItem（）时，它就不工作了，它说本地存储没有定义

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

const users=localStorage.getItem('users')!==null ?JSON.parse(localStorage.getItem("users")):[];
const initialState = { value: users };
const Users = createSlice({
  name: "users",
  initialState,
  reducers: {
    addUser: (state, action) => {
      state.value.push(action.payload);
      localStorage.setItem("users",JSON.stringify(state.value.map(item=>item)))
    },},});

export const { addUser} = Users.actions;
export default Users.reducer;

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但上面写着