Unable to Progress Pyre of Stars Mission

Hello everyone. I hope I am posting this in the right area (feel free to have this post marked to be moved if not). I have encountered what appears to be a game breaking bug in the Pyre of Stars mission. After the cutscene played my game closed unexpectedly. When I went back to login it took me back to right after the cutscene would finish but now I can’t progress. None of the characters dialogue plays and I can’t get the next quest objective to unlock. Does anyone know a fix to this?

If not does anyone know of a way to restore a character save to a previous point? This is my one “entitled gamer” pet peeve, but to me it is unacceptable to only be allowed a single save for a specific character (as in the one I am running with right now I know I can start over on a new toon multiple times) with no means of restoring to a previous point for cases like this where something goes wrong.