[glubbish]

Ubuntu 18.04.4 LTS (GNU/Linux 4.15.0-88-generic x86_64)
using cpu as gpu

installed via ppa
kodi 18.6 git: 20200301-8e967df921

skin helper service marcelveldt-1.1.3
arrow crsmithdev,Razzeee-0.15.5

Problem shows at startup or whenever I update skin helper service.

Looks the same as the arrow broken error, but continues with above versions

debug log: https://pastebin.com/xDZt6q1H

[ronie]

you can check if this solution also works for you:
https://github.com/trakt/script.trakt/is...-579524031

sudo apt install python-backports.functools-lru-cache

[glubbish]

you can check if this solution also works for you:
https://github.com/trakt/script.trakt/is...-579524031

sudo apt install python-backports.functools-lru-cache

Thanks Ronie.

That fixed the problem.
That page did not turn up in any of my searches.