I've looked up the code, it's supposedly a local network error and according to bungie all that you need to do is power cycle your router, console, and modem. Did that several times yesterday and even reinstalled the game and it's still happening. Obviously I'd like this fixed before season of the drifter starts, but I have no idea what's causing it at this point.
Marionberry error code page: https://www.bungie.net/en/Help/Article/11877