Grant credentials are invalid when using CCGAuth

Hi

I have an authorized App (with Enterprise access) and I'm trying to authenticate via Client Credentials Grant using Python. This is my code so far:

from boxsdk import Client, CCGAuth

auth = CCGAuth(client_id='hdtqun02qporyeiw31rbti8lc1tmnerc',
client_secret=CLIENT_SECRET,
enterprise_id=ENTERPRISE_ID)

client = Client(auth)

print(f'Id of the authenticated user is: {client.user().get().id}')

I get the following error:

BoxAPIException: Message: Grant credentials are invalid

Status: 400

Code: invalid_grant

Request ID: None

Thanks!