SCIM Resource not found

I'm trying to retrieve user list but it gives me following error. 

Exception: Resource not found  SDK HTTP Error at https://platform.devtest.ringcentral.com/restapi/v1.0/scim/v2/Users  Response text: {    "errorCode" : "AGW-404",    "message" : "Resource not found",    "errors" : [ ]  }

https://developer.ringcentral.com/api-docs/latest/index.html#!#RefScimUserList.html

$rcsdk = new SDK($credentials['clientId'], $credentials['clientSecret'], $credentials['server'], 'Demo', '1.0.0');

$platform = $rcsdk->platform();

$platform->login($credentials['username'], $credentials['extension'], $credentials['password']);

$response = $platform->get('/scim/v2/Users')->json()->records;