fix default query case when query value null is provider

[nikgraf]

I noticed when using in production the query will not be undefined, but null. This doesn't work with default arguments.

TODO:

• Update CHANGELOG.md with your change (include reference to issue & this PR)
• Make sure all of the significant new logic is covered by tests
• Rebase your changes on master so that they can be merged easily
• Make sure all tests and linter rules pass

[stubailo]

Thanks!