int() argument must be a string, a bytes-like object or a real number, not 'NoneType' while accessing pagination related attributes #1686

Description of the problem, including code/CLI snippet

Accessing current_page , per_page , total , total_pages attributes , throwing the following error.
int() argument must be a string, a bytes-like object or a real number, not 'NoneType'

  gl = gitlab.Gitlab('https://gitlab.com/', private_token=developer_access_token,
                       pagination="keyset", order_by="id",
                       per_page=100)
    iterator_projects = gl.projects.list(as_list=False, owned=True)

Expected Behavior

It should return the number of pages expected

Actual Behavior

throwing exceptions.

Specifications

• python-gitlab version:2.10.1
• API version you are using (v3/v4): v4
• Gitlab server version (or gitlab.com):gitlab.com