Google Cloud Firestore - Error Queryings

I want to search for a document where there’s a specific value in one of the fields email

However, I keep getting the following error:

[400] Invalid JSON payload received. Unknown name “structuredQuery” at ‘document’: Cannot find field.

According to this link: How to use the "where" filter in the Firestore Query module? - #10 by eg this is a known and pervasive problem in Make where the WHERE doesn’t work for Firestore…is this true?

For quicker assistance with technical bugs/issues like these, you may want to contact support directly, as it opens up a ticket on their support system. They respond very quickly and update you frequently on the status of their investigation.

Hope you can share the resolution with us if you manage to solve this problem!