zeep.exceptions.XMLParseError: Unexpected element 'uf', expected 'id'

[joaopenna]

when using the method find_zipcode from client.py, an exception is being raised whenever a valid zipcode is entered.

// invalid zipcodes
client.find_zipcode(ZipCode('01310-92'))
*** correios.exceptions.InvalidZipCodeError: Invalid zipcode 01310-92
client.find_zipcode(ZipCode('99999-999'))
*** correios.exceptions.ClientError: CEP INVÁLIDO

// valid zipcode
client.find_zipcode(ZipCode('01310-920'))
*** zeep.exceptions.XMLParseError: Unexpected element 'uf', expected 'id'

any advice?
thanks in advance