This has happened to me 5-6 times now while hosting Railjack Missions.
I play on an Xbox One X, not sure if there is a way to recover error logs. Last crash happened around 5:17PM EST 12/22, and several times between 12:00-5:00 today as well.
I can't tell if there is a specific reason, generally I'm piloting with a full crew and then the game stops for a split second and then Boom: Dashboard.
Once I load Warframe again it does not ask me if I want to rejoin my squad, even if the mission is still in progress.
I've lost a decent amount of time and rewards to this bug.