Missing a dependency

HI guys
I’m new to this forum
I just downloaded Ubuntu ( full install) & hve received a message that I am missing a dependecy.
Any idea hoy I can find this dependency & load it?
Any assistance will be apreciated.
Screenshot from 2019-04-16 11:53:43

This site is for the co-ordination of the Ubuntu project(s), and not support.

For Ubuntu Support options, please have a look at https://community.ubuntu.com/t/finding-help/712

If you just downloaded it, the message/picture reminds me more of a do-release-upgrade more than a new install, and https://packages.ubuntu.com/search?suite=all&searchon=names&keywords=apt implies you are running a rather old 14.04 LTS as an upgraded 14.04 LTS would have 1.0.1ubuntu2.23 which is >2.13 so fully dist-upgrade before you attempt do-release-upgrade, but I don’t see how this relates to a full-install, and if you need more help please use an appropriate forum or site for Support

Sorry for using the wrong forum.
I will use the correct forum.