Delorean.... Easy peasy.
On a more serious note... I think the message that Nick Fury sends via a Pager to Captain Marvel... Somehow it's a pager that can send messages to the past. Otherwise why use a pager?...haha. Anyways, Captain Marvel is the gonna learn that almost all of Avengers got pixied... And she's gonna set some events in motion in the past that will help prevent it.