Can't get all users using Node SDK V2

Can't get all users using Node SDK V2

I'm having a problem using the Zoho CRM Node.js SDK V2. I'm trying to get all users from my organization with the getUsers-method. I have copied the sample code from here: https://www.zoho.com/crm/developer/docs/nodejs-sdk/v2/user-samples.html?src=get_users

When I try to use the method the response is following:

Status Code: 400
Status: error
Code: INVALID_REQUEST
Message: unable to process your request. please verify whether you have entered proper method name, parameter and parameter values.

Do you have any idea of what could be causing the problem?