Problem:
W: Target Packages (Packages) is configured multiple times in /etc/apt/sources.list.d/00_ucs_temporary_installation.list:3 and /etc/apt/sources.list.d/20_ucs-online-component.list:20
W: Target Packages (Packages) is configured multiple times in /etc/apt/sources.list.d/00_ucs_temporary_installation.list:4 and /etc/apt/sources.list.d/20_ucs-online-component.list:21
W: Target Packages (Packages) is configured multiple times in /etc/apt/sources.list.d/00_ucs_temporary_installation.list:5 and /etc/apt/sources.list.d/20_ucs-online-component.list:22
Error: Failed to execute "apt-get update"
exitcode of univention-updater: 1
Solution:
Clean up obsolete component lists, so only 15 and 20 are listed. (exept you have special lists for some apps as kopano or open-xchange)
ls -lah /etc/apt/sources.list.d/
-rw-r--r-- 1 root root 3,4K Nov 27 09:46 15_ucs-online-version.list
-rw-r--r-- 1 root root 1,3K Jan 11 16:10 20_ucs-online-component.list
The 00* and 20* files are created by templates and the updater itself.
Check univention-check-templates too and rewrite the files by ucr commit /etc/apt/sources.list.d/*
May be related to the following article or may cover up errors.