401 error using Mongo connector in PowerAutomate Flow

[c-boston]

Thanks for putting this Azure Function together. My goal is to use it as a drop-in replacement for Mongo's Data API since its being deprecated soon. I've successfully deployed the AF and it works fine when testing with Postman, however the Flow action using the Mongo connector is failing with a 401 unauthorized error.

I've tried all of the app keys for the function, master and default at both the host and function levels and I get the same 401 result. I've also tested in the Flow by using a regular HTTP trigger and that works so it appears to be an issue with the Mongo connector. The inputs and outputs from the failed Flow run do not yield much information as to the underlying request that connector makes.

Please suggest any fixes or additional troubleshooting steps. Thanks!