struct.pack error creating token using custom User model with UUID as pk

[LaundroMat]

I'm using version ^3.2.1 and ran into the same issue as #17 when using a custom User model with a UUID as primary key.

The custom user model inherits from AbstractBaseUser and this abstract model class:

class UUIDModel(models.Model):
    id = models.UUIDField(
        primary_key=True,
        default=uuid.uuid4,
        editable=False,
        unique=True
    )

    class Meta:
        abstract = True

The error is;

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
..\..\..\.venv\lib\site-packages\sesame\utils.py:47: in get_query_string
    return "?" + urlencode({settings.TOKEN_NAME: create_token(user, scope)})
..\..\..\.venv\lib\site-packages\sesame\tokens.py:16: in create_token
    return tokens.create_token(user, scope)
..\..\..\.venv\lib\site-packages\sesame\tokens_v2.py:133: in create_token
    primary_key = packers.packer.pack_pk(getattr(user, settings.PRIMARY_KEY_FIELD))
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

cls = <class 'sesame.packers.LongPacker'>
user_pk = UUID('d3b413f6-2249-4daf-92b0-c84d562db011')

    @classmethod
    def pack_pk(cls, user_pk):
>       return struct.pack(cls.fmt, user_pk)
E       struct.error: required argument is not an integer

..\..\..\.venv\lib\site-packages\sesame\packers.py:62: error

[LaundroMat]

I forgot to tell Django that my custom user model was the one to return when get_user_model() is called (in other words, I didn't set AUTH_USER_MODEL in the settings).