AAF Export Error: "Audio Files are incomplete"

Hi!
I need to export to AAF.
Problem is, after export I always get an error message that “audio files are incomplete”.
Settings: Copy Media, All in One File.
Tried to export one track alone or all tracks. Tried different projects. Tried to render in place before export. Always the same problem.

Cubase 13.0.51.

Anyone can help?
Thanks.