System booting without full network error

how do i fix this, i think my computer did a upgrade and now internet not working, this is on a live site
realtek card
ubuntu 14.04.5 server edition

I’ve moved this to the https://community.ubuntu.com/c/support-help-requests category because this site isn’t designed to take tech support questions. Sorry. I’d recommend using one of the official support channels listed on the Finding Help page.