Error installing update while looking for updates

I had this error trying to update
Ps i’m also having problems decoding x265 since a couple of updates with artifacts, green rectangles, etc

Could you be a bit more specific? Was this a manual (or automatic update) via MyOSMC or an update (eg apt-get) from the command line?

I see you’re running Kodi 18-RC2, so will probably be familiar with SSH. What happens if you run:

sudo apt-get update
sudo apt-get dist-upgrade

Thanks, it gives me GPG error on signature verification. so idk how to solve it. I’m a total noob

You installed Kodi v18 from @gmc’s repository.
See the v18 nightly post for information on how to update your key.

changing/updating the repo, seems to have solved it. Thanks