Hi @QXQX,
It looks like Amazon is returning an error on these files:
“Cannot complete upload”
This doesn’t tell us a whole lot (or anything, really), but it is also not uncommon for Amazon. We’ve historically had issues uploading larger files to Amazon and their API will reject or error the upload without a definitive reason. It is one of the reasons we created IFS, to allow large uploads for archiving data. https://medium.odrive.com/cloud-upload-was-a-struggle-until-today-bb267cb5566e
Amazon has also not released their resumable upload API to devs, so we cannot try to resume where it left off. However, I believe they do make use of the resumable upload API in their own client. For these large file uploads, you may want to try using their client for these files and see if you have better luck.