python-Django错误：不支持从字节到十进制的转换【代码】

所以我有以下模型class Stock(models.Model):name = models.CharField(max_length=50)unit_measure = models.CharField(max_length=10)unit_price = models.DecimalField(max_digits=10, decimal_places=2)当我尝试在Django的管理站点中添加该模型的实例时,出现以下错误(<class 'TypeError'>, TypeError('conversion from bytes to Decimal is not supported',))Exception Location: /Library/Frameworks/Python.framework/Version...