Error 404: PersonGroupId Not found

[mini-nijgal]

C:\Users\Admin\Desktop\Autoattendance-Cognitive-master>python create_person.py user25
Traceback (most recent call last):
File "create_person.py", line 11, in
res = CF.person.create(personGroupId, str(sys.argv[1]))
File "C:\Users\Admin\AppData\Local\Programs\Python\Python38\lib\site-packages\cognitive_face\person.py", line 71, in create
return util.request('POST', url, json=json)
File "C:\Users\Admin\AppData\Local\Programs\Python\Python38\lib\site-packages\cognitive_face\util.py", line 103, in request
raise CognitiveFaceException(response.status_code,
cognitive_face.util.CognitiveFaceException: Error when calling Cognitive Face API:
status_code: 404
code: PersonGroupNotFound
message: Person group is not found.
Parameter name: personGroupId

Can someone please help me out with this.