Bryan
Click to see attachment 🖼️
Looks good to me.
Would you be happy to try a different S3 provider? E.g. set it up with Backblaze, MinIO or Cloudflare?
Reviewed the Rclone code and it does seem this error can be thrown from either the local side or the remote side.
Trying to rule out if this issue is related to the local FS / OS or perhaps remote back-end.