Issue uploading File via API

Hi, we are pushing files to ServiceM8 jobs via the API. We have been doing it in the past without issue, but in the past few days, we've had a bunch of 400 responses from the ServiceM8 API saying that every file upload needs a timestamp.

Was this change at any point recently? We haven't changed our system in the last 3 months and the images have been uploading fine until now.

I can't find any notifications of changes happening to the API.

Thanks.