Graphene-Django - 'int' object has no attribute 'pk'

I'm new to working with GraphQL and Django and I am trying to test out in the playground but I am getting a 'int' object has no attribute 'pk' error.

My models.py

class Managers(models.Model):
    id = models.IntegerField(primary_key=True)
    jointed_time = models.DateField()
    started_event = models.IntegerField()
    favourite_team = models.ForeignKey(
        Teams, models.DO_NOTHING, db_column='favourite_team', blank=True, null=True)
    player_first_name = models.TextField()
    player_last_name = models.TextField()
    player_region_id = models.IntegerField()
    player_region_name = models.TextField()
    player_region_iso_code_short = models.TextField()
    player_region_iso_code_long = models.TextField()
    team_name = models.TextField()

    class Meta:
        managed = False
        db_table = 'managers'

class Gameweeks(models.Model):
    id = models.IntegerField(primary_key=True)
    name = models.TextField()
    deadline_time = models.DateField()
    deadline_time_epoch = models.IntegerField()

    class Meta:
        managed = False
        db_table = 'gameweeks'

class ManagerGwStats(models.Model):
    id = models.OneToOneField(Managers, models.DO_NOTHING, db_column='id', 
        primary_key=True)
    active_chip = models.TextField(blank=True, null=True)
    gameweek = models.ForeignKey(
        Gameweeks, models.DO_NOTHING, db_column='gameweek')
    points = models.IntegerField()
    total_points = models.IntegerField()
    rank = models.IntegerField()
    rank_sort = models.IntegerField()
    overall_rank = models.IntegerField()
    bank = models.IntegerField()
    value = models.IntegerField()
    event_transfers = models.IntegerField()
    event_transfers_cost = models.IntegerField()
    points_on_bench = models.IntegerField()

    class Meta:
        managed = False
        db_table = 'manager_gw_stats'
        unique_together = (('id', 'gameweek'),)

Schema.py

class GameweekType(DjangoObjectType):
    class Meta:
        model = Gameweeks
        fields = "__all__"

class ManagerType(DjangoObjectType):
    class Meta:
        model = Managers
        fields = "__all__"

class ManagerGwStatType(DjangoObjectType):
    class Meta:
        model = ManagerGwStats
        fields = "__all__"

class Query(graphene.ObjectType):
    all_managers = graphene.List(ManagerType)
    manager = graphene.Field(ManagerType, manager_id=graphene.Int())
    all_gameweeks = graphene.List(GameweekType)
    gameweek = graphene.Field(GameweekType, gameweek=graphene.Int())
    manager_gw_stats = graphene.Field(ManagerGwStatType, manager_id=graphene.Int(), 
        gameweek=graphene.Int())

    def resolve_all_managers(self, info):
        return Managers.objects.all()

    def resolve_manager(self, info, manager_id):
        return Managers.objects.get(pk=manager_id)

    def resolve_all_gameweeks(self, info):
        return Gameweeks.objects.all()

    def resolve_gameweek(self, info, gameweek):
        return Gameweeks.objects.get(pk=gameweek)

    def resolve_manager_gw_stats(self, info, manager_id, gameweek):
        return ManagerGwStats.objects.get(id=manager_id, gameweek=gameweek)

schema = graphene.Schema(query=Query)

When I run some queries in the playground the managerGWStats query works until I try to delve into the ID field which is where I get the error. I am able to access gameweek data though which is why I am confused as the models for gameweeks and managers is broadly similar. I'm not sure if it has something to do with the composite PK I have on the ManagerGWStats model?

GraphQL playground images enter image description here

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