I'm getting the same thing. Was playing fine for half an hour, did some patrol, did a few bounties, got to the end of the daily heroic and was attacking the first boss when... "currant". Now I can't do anything except stay in orbit.
When I look up the error code it gives zero information on what it means. Brilliant.
What country and platform are you? I'm UK and XB1.
[i]Edit: Oh hello, it's letting me start the daily heroic mission again. And I'm right back at the beginning. Try again, it might be okay for you too now.[/i]