I’d check the current content of your
/etc/apt/sources.list.d/20_ucs-online-component.list. I see it on my test system from time to time that these are not correctly filled because of an ssl issue. in my case an
update-ca-certificates followed by
ucr commit /etc/apt/sources.list.d/15_ucs-online-version.list solves it for me.
PS: For error messages out of a console a copy & paste of the text is imho preferred to a screenshot (at least by me) as this makes is way easier to read and also copy & paste error messages for further lookups.
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