Hello @noris ,
may be this issue is related to Roon stopping randomly - #105 by noris
What I did therefore:
I forced a backup:

Afterwards started a maintenance of my entire library

DONE:

Started the Export again

Export stopped after some minutes at track nr 30, keeps spinning:

CPU activity was low for some minutes during export, then went to sleep:

Disk activity stopped also after some minutes:

Memory usage was never above 64%.
Downloaded Logfile “download_2021-11-20_12-48-56.zip” and stored in the DropBox above
PLEASE HELP!