Error Message IndexError: list index out of range => test_positive_create_with_all_users

[vijay8451]

@tier2
def test_positive_create_with_all_users(session):
    """Create organization and new user. Check 'all users' setting for
    organization. Verify that user is assigned to organization and
    vice versa organization is assigned to user

    :id: 5bfcbd10-750c-4ef6-87b6-a8eb2eae4ce7

    :expectedresults: Organization and user entities assigned to each other

    :BZ: 1321543

    :CaseLevel: Integration
    """
    user = entities.User().create()
    org = entities.Organization().create()
    with session:
        session.organization.update(
            org.name, {'users.all_users': True})
        org_values = session.organization.read(org.name)
        assert user.login in org_values['users']['resources']['assigned']
        session.organization.search(org.name)
        session.organization.select(org_name=org.name)

      assert session.user.search(user.login)[0]['Username'] == user.login

E IndexError: list index out of range