Error code

macOS -8003

MACOS-8003
System Error Code· A POSIX/system errno returned when a system call fails.

What it means

Finder operation failed — Finder encountered an unrecognised resource-fork or metadata write failure..

How to fix it

  1. Use Terminal `cp` to copy without resource forks.
  2. run `xattr -cr /path/to/file` to strip extended attributes before copying.
  3. reformat the destination as APFS or exFAT for better Mac compatibility.

Not affiliated with macOS. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.