Dashboard.js

...
constructor(props) {
    super(props);
    const ACCESS_TOKEN = localStorage.getItem('access_token');
    this.client = new ApolloClient({
        uri: "https://himanshu-todo.herokuapp.com/v1alpha1/graphql",
        headers: {
            'Authorization': `Bearer ${ACCESS_TOKEN}`,
        }
    });
}
...
render() {
    return (
        <div>
            <ApolloProvider client={this.client}>
     

            </ApolloProvider>

           
        </div>
    );
}