Remove unwanted repositories

HI there,

Can you help me out on this one?
Whenever i try to update now i get an error.
That is because there is an repo from onlyoffice.
I already tried to remove but i can´t

Is there anyway ?

See the attahced pic


sudo apt update

in the terminal and post back the results. There might be an error that the software updater doesn't show.

Zorin menu > System Tools > Software Updater application > wait for it to get done doing its checks, click the 'Settings' button > go to 'Other Software' tab > If it's available, click the 'Revert' button | if that's not available, go through the list to remove the offending repository.

I am surprised you don't get the same issue with Opera (noticed it in your Applesque panel). You are getting the error because Zorin cannot find an OnlyOffice update parameter because it is not in the main repository with it being a third party app. I used to get that with Opera before it got taken over by Chinese data scraper - you also need to change your Browser to one that is more privacy respecting.