I’m encountering an error when testing this code with Postman. Can you help me identify the cause? “AssertionError at /POST_Create_NewInvoiceBuy/

("Creating a ModelSerializer without either the 'fields' attribute or the 'exclude' attribute has been deprecated since 3.3.0, and is now disallowed. Add an explicit fields = '__all__' to the Create_NewInvoiceBuy_serializers serializer.",) "  

“I want to store invoice data in three tables that have a one-to-many relationship. However, I keep getting the following error:

I’ve tried various approaches, but I’m still unable to identify the source of the issue. Can anyone provide guidance?”

the code is :

# -----------models  products---------------------

class Tbl_Products (models.Model):
        Code_product=models.IntegerField(blank=False,null=False)
        Name_product=models.CharField(max_length=30, blank=True , null=True) 
        Unit_counting=models.CharField(max_length=20)# واحد شمارش  
        Amount=models.IntegerField(blank=True,null=False)
        Unit_price=models.IntegerField(blank=True , null=True)

#-------------tables --------  
class Tbl_ListAccounting (models.Model):
      Code_Account=models.IntegerField(default=100 , blank=False,  null=False)
      Name_Account=models.CharField(max_length=50 , blank=True , null=True) 
      Type_Account=models.CharField(max_length=50 , blank=True , null=True) 

class Tbl_purches (models.Model):
      Custom_id = models.CharField(max_length=10, primary_key=True)
      Code_Invoice_purches=models.IntegerField(default=100 , blank=False,  null=False)
      Create_DateInvoice=models.DateField(auto_now_add=True,blank=False,  null=False)
      Due_date=models.DateField(auto_now_add=True, blank=False,  null=False)   
      Name_customer=models.ForeignKey(Tbl_Customers,on_delete=models.PROTECT, blank=False,  null=False)

class Tbl_Detail_invoice_purches(models.Model):
      # Code_product=models.ForeignKey(Tbl_Products, on_delete =models.CASCADE)
      Name_product= models.CharField(max_length=20 , blank=False, null=True)
      Unit_Counting=models.CharField(max_length=100 ,blank=False ,null=True)
      Amount_product=models.DecimalField(max_digits=13,decimal_places=2 )
      Unit_price=models.DecimalField(max_digits=13,decimal_places=2)  
      Total_price=models.DecimalField(max_digits=13,decimal_places=2 )
      ID_Tbl_detail=models.ForeignKey(Tbl_purches, on_delete=models.CASCADE,blank=False,null=False )

  #--------------------------------serializer create newinvoice -----------
class Detail_NewInvoice_Serializers(serializers.ModelSerializer):

      class Meta :
            model=Tbl_Detail_invoice_purches
            fields= '__all__'


class Create_NewInvoiceBuy_serializers (serializers.ModelSerializer):
     Detail_invoice_purches =Detail_NewInvoice_Serializers(read_only=True)

     class Meta :
            model=Tbl_purches
            fileds=['Custom_id','Code_Invoice_purches','Create_DateInvoice','Name_customer','Due_date','Detail_invoice_purches']
                

         

     def create (self,validated_data) :
            Detail_invoice_data=validated_data.pop( 'Detail_invoice_purches')
            purches=Tbl_purches.objects.create(**validated_data) 
            for item in Detail_invoice_data:
                 Tbl_Detail_invoice_purches.objects.create(ID_Tbl_detail=purches ,**item)
                 return purches    

and the  data  is   {
  "Create_DateInvoice": "2025/04/03",
  "Name_customer": "hemo",
  "Due_date": "2026/04/03",
  "Detail_invoice_purches": [
    {
      "Code_product": "88888",
      "Name_product": "Cheksns_morgh",
      "Unit_Counting": "kg",
      "Amount_product": "1500",
      "Unit_price": "58000",
      "Total_price": "870000000"
    }
  
  ]
}