Getting an error ERROR: could not validate document '%!s(<nil>)' for read

MongoDB Atlas App Services & Realm Atlas GraphQL API
,
2

Found the issue

I was doing this to find the max value

let maxDhvResult = await collection.aggregate([{ $group : { _id: null, maxDataHubVersion: { $max : "$dataHubVersion" }}}]).toArray();

And it’s weird that it works with mongo cloud function editor/graphql but not when I call the graphql customresolver from a C# client.

Changing it to below fixed my issue

let maxDhvResult = await (collection.find({},{dataHubVersion: 1}).sort({datahubVersion:-1}).limit(1).toArray());