I am on the ''Vendetta' (Find a Key) step of 'A Guardain Rises' I go to the quest marker flag thing in the Forgotten Shore, start the quest, and load in. I get some dialogue from Ghost about how we need to look for old caches. And then thats it. No further steps, no markers, nothing to tell me where or how im supposed to find these old cashes. Asking around i discovered that you need to find some already-empty chests, which should be marked but are not for me. I followed some instructions to a red tinted cave full of Hive, but while i found a chest within, i could not interact with it. As far as i can tell, the quest is suffering a progression stopping bug. I have no idea what caused it or why its not letting me progress.