Error Login Facebook React Native

I am having problems doing login in react-native , I followed all the corresponding steps, and at the time of logar it presents the following error

  

cannot read property 'logInWithReadPermissions' of undefined

import FBDSK, { LoginManager } from 'react-native-fbsdk'

_fbAuth() {

        LoginManager.logInWithReadPermissions(['public_profile', 'email']).then(
            function(result) {
                if (result.isCancelled) {
                    alert('Login cancelled');
                } else {
                    alert('Login success with permissions: ' +
                        result.grantedPermissions.toString());
                }
            },
            function(error) {
                alert('Login fail with error: ' + error);
            }
        );

    }