$ curl -H "Authorization: Bearer $TOKEN" -H "Content-Type: application/json" --request POST --data '{"username": "nonexistent", "global_role": "user"}' http://localhost:3000/api/users/update

File "/dstack/src/dstack/_internal/server/routers/users.py", line 87, in update_user
    res = await users.update_user(
  File "/dstack/src/dstack/_internal/server/services/users.py", line 144, in update_user
    return await get_user_model_by_name_or_error(session=session, username=username)
  File "/dstack/src/dstack/_internal/server/services/users.py", line 255, in get_user_model_by_name_or_error
    return get_or_error(
  File "/dstack/src/dstack/_internal/utils/common.py", line 270, in get_or_error
    raise ValueError("Optional value is None")
ValueError: Optional value is None