As I’ve read, many of you have encountered the same glitch in the Minken Bunker, preventing you from proceeding to the war board to unlock the next missions. If you destroyed the walker in the container before prompted (like I did) there is a simple solution I tried after reading what someone else tried, AND IT WORKS! All you need to do is invite a friend into your game, run to the bunker and bring them to the container. They should be able to see the walker properly in place and NOT destroyed, even tho it’s destroyed still on your screen. Get them to blow it up, and then thank me later 
I can’t tell you how annoyed I was with this, and I carried on exploring which has now bugged out the mission “No rest for the Weary” cause I discovered the safehouse before the mission told me to… I play on Xbox so hopefully this works for everyone!