I found an interesting bug @Erik_Hatcher
If I use this query in the Search Tester (Inside of my search & vector index) it works
[{"$search":{"index":"userDocumentsIndex","range":{"path":"created_at","gte":{"$date":{"$numberLong":"1262304000000"}},"lt":{"$date":{"$numberLong":"1893456000000"}}},"sort":{"created_at":-1}}}]
but for some reason if I just click on “Format” button in your platform it doesn’t work and returns the same error
"range.lt.type" is required