Some other program is currently using the package manager

[tgwaste]

# ls -la /var/lib/dpkg/lock
ls: cannot access '/var/lib/dpkg/lock': No such file or directory

How to fix this?
(without rebooting)

Version
248-1~ubuntu20.04.1

[martinpitt]

This message comes from PackageKit. Possibly you were running Gnome Software, or perhaps manually ran pkcon refresh or something similar?