Find Query - test if column is null #3483

Steps to reproduce

Create a feather app with knex.
Create a shema with a nullable/optional column

• optId: Type.Optional(Type.Number()),

Query to filter all row where the optional column is null

Expected behavior

Get the resutls

Actual behavior

Can't it to work at all.
$ne: do not accept null value
If I set it to undefined, I have a binding error in knex.

Could you please help to create this query?
I read the docs and I can't get any explanation on how to write this kind of query.

Thanks,