debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable

 I share solution next error ubuntu 20.04.

Run the next command.

sudo fuser -v /var/cache/debconf/config.dat

Kill process.

sudo kill -9 PID

Next:

sudo apt update;

sudo apt upgrade;

That it is.

References.

https://askubuntu.com/questions/136881/debconf-dbdriver-config-config-dat-is-locked-by-another-process-resource-t