Addon store not loading

Installed on Virual Box VM on windows.
Got UI and configured some devices.
The problem is at addon store: not loading (running circle).
Pressed 3 dots+ reload then got error in logs at supervisor -system :

Please help me with terminating the process and deleting the shallow.lock file.
I’v tried to find the file but did not find it in the path from logs (login in teminal with ls and cd commands) .

find / -name addons -type d

And please don’t post logs as images …

Thanks for help.
Found the directory at several places .

Stay out of ‘overlay’ directories, they are internally handled by Docker. I am not sure, if find can handle hidden directories (.git), but you could search for shallow.lock directly.

find / -name shallow.lock -type f 

or (to remove any occurance of that file)

find / -name shallow.lock -type f -exec rm {} \;

That helped. Now there is another problem.
After install of file editor and duckdns i cannot enter UI.
By homeassistant.local:8123 and IP
Observer homeassistant.local:4357 works.

The problem is in letsencript setup.
Forgot that installed it.