I have a table with some attributes set to null. Internally DynamoDB stores them as an object with an null attribute set to true: ``` my_attribute { "NULL": true } ``` When scanning the table Dynamite gives me that error apparently because NULL is not considered in [objectToValue method](https://github.com/Medium/dynamite/blob/daa398ed797dc8c815c9f21a752d4c13a28eb45c/lib/typeUtil.js#L143).