Laravel 5.6 ytake/laravel-couchbase authentication issue

I am using laravel 5.6 and using couchbase SDK to establish the database connection. When I run the test on core PHP I am able to access the bucket but using ytake/laravel-couchbase package it’s throwing an error of authentication. My code looks like below:

public function index()
$authenticator = new \Couchbase\PasswordAuthenticator();

I am not able to figure out how to authenticate using mentioned package or if it automatically does that so what’s wrong here.

hi ,
please go over this:

Thank for share information of you!