Ive run into this issue with my Titan while starting the Shadowkeep campaign. I know there are multiple posts about this dating back to the release, and the mission should be in my postmaster, however it's not. Are there any solutions to this? There are no missions in my shadowkeep quest line tab, and when i visit Eris on the Moon, hovering over the bounties just says 'requires shadowkeep campaign progress'. Can I restart the Shadowkeep campaign somehow?