How to fix error: Could not find router reducer in state tree, it must be mounted under "router"

I got - Error: Could not find router reducer in state tree, it must be mounted under "router".

I've read all the similar topics. Tryed different variants, but can't find solution. I still don't have enough knowledge to understand the subject. Plz help to fix this error if you know how.

index.js

import { render } from 'react-dom';
import { Provider, ReactReduxContext } from 'react-redux';
import React from 'react';
import { store, history} from './store';
import { Route, Switch } from 'react-router-dom';
import { ConnectedRouter } from 'connected-react-router'
import App from './components/App/App';

render(
    <Provider store={store}>
        <ConnectedRouter history={history} context={ReactReduxContext}>
            <Switch>
                <Route path="/" component={App} />
            </Switch>
        </ConnectedRouter>
    </Provider>,
    document.getElementById('root')
);

part of reducers.js

import { combineReducers } from 'redux';
import { routerReducer } from 'react-router-redux';

export default combineReducers({
    router: routerReducer
});

store.js

import { applyMiddleware, createStore } from 'redux';
import { createLogger } from 'redux-logger';
import { promiseMiddleware, localStorageMiddleware } from './middleware';
import reducer from './reducers/reducers';
import { routerMiddleware } from 'react-router-redux'
import { createBrowserHistory } from 'history';

export const history = createBrowserHistory();
const getMiddleware = () => applyMiddleware(
    routerMiddleware(history), promiseMiddleware, localStorageMiddleware, createLogger()
);

export const store = createStore(
    reducer,
    getMiddleware(),
);

tryed do like this: in store.js

import { applyMiddleware, createStore } from 'redux';
import { createLogger } from 'redux-logger';
import { promiseMiddleware, localStorageMiddleware } from './middleware';
import reducer from './reducers/reducers';
import { createBrowserHistory } from 'history';
import { routerMiddleware } from 'connected-react-router';

export const history = createBrowserHistory();
const myRouterMiddleware = routerMiddleware(history);

const getMiddleware = () => applyMiddleware(
    myRouterMiddleware, promiseMiddleware, localStorageMiddleware, createLogger()
);

export const store = createStore(
    reducer(history),
    getMiddleware()
);

in reducers.js

import authorization from './authorization';
import mainstate from './mainstate';
import home from './home';
import { combineReducers } from 'redux';
import { connectRouter } from 'connected-react-router'

export default (history) => combineReducers({
    authorization,
    mainstate,
    home,
    router: connectRouter(history)
});

got the same error :(