eq and neq filters for the autogenerated Graphql API. eq and neq set to a value seems to work. But eq: null and neq: null don't appear to be working. Not sure the best to debug this as I am testing it with the local development setup. Here is an example of the query I am trying to perform. A category has a parent_id which references another category. This query returns back nothing while there are in fact entries in the database that don't have a parent_id. Any help is appreciated! Thanks