По какой причине не показывается reducer в devTools?

Question

[laravel_creative_3103]

сам STORE

import { configureStore } from '@reduxjs/toolkit';
import booksReducer from './slice/booksSlice';
import filterReducer from './slice/filterSlice';
import errorReducer from './slice/errorSlice';
const store = configureStore({
  reducer: {
    books: booksReducer,
    filter: filterReducer,
    error: errorReducer,
  },
});

export default store;

сам ERRORSLICE

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

const initialState = '';

const errorSlice = createSlice({
  name: 'books',
  initialState,
  reducers: {
    setError: (state, action) => {
      return action.payload;
    },

    clearError: () => {
      return initialState;
    },
  },
});

//

export const { setError, clearError } = errorSlice.actions;

export const selectedErrorMessage = (state) => state.error;

export default errorSlice.reducer;

по какой то причине отображается только books, а error, он будто бы не видит, в чем может быть причина?