So I am Following a course of Django API and at last of my project is to create API for a Little Lemon restaurant.I have downloaded the Same Project Source code and now implementing it on my side.Currently i am stuck on a issue for 2 days now i have tried chatgpt, stack-overflow but there are no concrete solution.so the problem is i can’t insert a menu-item in the DB. Beacuse it is thorwing an error of

IntegrityError at /api/menu-items NOT NULL constraint failed: LittleLemonAPI_menuitem.category_id

**This error occurs when i try to insert a menu-item using the Insomia. But if i create the same item using the Super User it is created.

This is my View.**

class MenuItemListView(generics.ListCreateAPIView):
    queryset = MenuItem.objects.all()

    serializer_class = MenuItemSerializer

    def get_permissions(self):
        permission_classes = [IsAuthenticated]
        if self.request.method != 'GET':
            permission_classes = [IsAuthenticated, IsManager | IsAd

This is my Model:

class MenuItem(models.Model):
    title = models.CharField(max_length=255)
    price = models.DecimalField(max_digits=10, decimal_places=2)
    featured = models.BooleanField(db_index=True)
    category = models.ForeignKey(Category, on_delete=models.PROTECT)

    class Meta:
        unique_together = [['title', 'category']]
        
    def __str__(self):
        return self.title

This is my Serializer

class MenuItemSerializer(serializers.ModelSerializer):
    def validate_category(self, value):
        try:
            Category.objects.get(pk=value)
            return value
        except Category.DoesNotExist:
            raise serializers.ValidationError('Invalid category ID.')

    class Meta:
        model = MenuItem
        fields = ['id', 'title', 'price', 'featured', 'category']
        depth = 1

This is my Json Request:

{
    "title": "Spring Rolls",
    "price": "5.99",
    "featured": true,
    "category": 1
}

NOTE: I have created the Category using the API but when i ty to create menu-item it is giving me this error. beacuse of foregin key constraint.

I have Tired Deleting the Migration and flushing the data and restarted the process but i got the same result.
I have also tried chatgpt but it gave me no concrete solution.

when i try to create menu-item using the superuser it is create.
but when i try to create the menu-item using API it gives me

IntegrityError at /api/menu-items NOT NULL constraint failed: LittleLemonAPI_menuitem.category_id