AttributeError：“ NoneType”对象在python中没有属性“ encode”

Question

当我调用下面的方法时，我得到了错误

line 152, in get_resources_by_filter_context_associated_components
    new_id = parse.quote_from_bytes((id.encode("utf-8")), safe="")
AttributeError: 'NoneType' object has no attribute 'encode'

---

 def get_resources_by_filter_context_associated_components(self, providers=None,account_number=None,
                                                              business_unit=None, environment=None,
                                                              availability=None, risk=None, sort_by='provider_code',
                                                              page='1', size="10",
                                                              application=None, id=None, header_value=True):
        """
 new_id = parse.quote_from_bytes((id.encode("utf-8")), safe="")