for some reason, apps that were working flawlessly now wont start
qBitorrent - now working
Sonarr - now working
Jackett - now working
Transmission - now working
RuTorrent - now working
NFS shares - now working
Please try to update to v6.21.
In cases an issue occurred when updating to v6.20 that might be related. To assure everything runs through as expected do:
Generally dietpi-services start will start all services, but the update issue might be the reason that it did not occur automatically, so do the above first.