admin/...处的操作错误一个连接中最多有 64 个表

如何解决admin/...处的操作错误一个连接中最多有 64 个表

我遇到了问题：

operationalError at /admin... at most 64 tables in a join

我正在使用 sqlite 数据库。请查看代码并帮助我。

class ReagentInventory(models.Model):
    company = models.ForeignKey(Company,on_delete=models.CASCADE)
    manufacturing_unit = models.ForeignKey(ManufacturingUnit,on_delete=models.CASCADE)
    ManufacturingPlant = models.ForeignKey(ManufacturingPlant,on_delete=models.CASCADE)
    reagent_name = models.ForeignKey(Reagent,on_delete=models.CASCADE)
    storage_location = models.ForeignKey(StorageLocation,on_delete=models.CASCADE)
    current_stock = models.DecimalField(decimal_places=3,max_digits=10,)
    measuring_unit = models.ForeignKey(MeasurementUnit,on_delete=models.CASCADE)
    reagent_lot_no = models.CharField(max_length=20)
    reagent_mother_lot_no = models.CharField(max_length=20)
    challan_no = models.CharField(max_length=20)
    mother_expiry_date = models.DateField()
    assigned_expiry_date = models.DateField()
    received_date = models.DateField()
    opening_date = models.DateField(blank=True)
    number_of_container = models.IntegerField()
    packing_mode = models.ForeignKey(PackingMode,on_delete=models.CASCADE)
    manufacturing_country = models.ForeignKey(Country,on_delete=models.CASCADE)
    supplier = models.ForeignKey(supplier,on_delete=models.CASCADE)
    manufacturer = models.ForeignKey(Manufacturer,on_delete=models.CASCADE)
    
    class Meta:
        verbose_name_plural = 'Reagent Inventories'
    
    def __str__(self):
        return self.reagent_name

    def __unicode__(self):
        return self.reagent_name