Element type is invalid: expected a string / Check the render method of `Provider` error

I have the following code:

import React from 'react';
import ReactDOM from 'react-dom';
import rootReducer from './redux/reducers/rootReducer';
import {Provider} from 'react-redux';
import {createStore, applyMiddleware} from 'redux';
import {BrowserRouter} from 'react-router-dom';
import thunk from 'redux-thunk';
import Main from './Main';

import './i18n';

const store = createStore(rootReducer,
    {},
    applyMiddleware(thunk));

ReactDOM.render(<Provider store={store}><BrowserRouter><Main/></BrowserRouter></Provider>, document.getElementById('app'));

But when I try to run it I get:

Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: object.

Check the render method of Provider.

My Main class looks like this:

function mapStateToProps(state) {
    return {
        dashboard: state.dashboard
    }
}

function mapDispatchToProps(dispatch) {
    return bindActionCreators(actions, dispatch)
}

const Main = withRouter(connect(mapStateToProps, mapDispatchToProps)(App));

export default Main;

What is the problem?