FOREIGN KEY constraint failed

[ghost]

Just folowing the readme.md and I could'nt execute the server-side 4th step :

[27/Feb/2023 22:09:40] "GET /admin/sso_gateway/service/add/ HTTP/1.1" 200 8380
Internal Server Error: /admin/sso_gateway/service/add/
Traceback (most recent call last):
  File "d:\Users\Eliott\Documents\Dev\cognlab\cognlab.fr\.venv\Lib\site-packages\django\db\backends\base\base.py", line 306, in _commit
    return self.connection.commit()
           ^^^^^^^^^^^^^^^^^^^^^^^^
sqlite3.IntegrityError: FOREIGN KEY constraint failed

[DAVIDhaker]

Hello! How many subordinate services do you have? And could you write step by step for this bug - how to reproduce it?