The game says i have opened all the collection chests. I don't know what else to do. I have been trying to figure this out for three days.
#41/42 wand handles glitch
raw mica
stuck parrot
Have you completed all quests aswell? Do you miss it in your collection for chests? Because if so the chest might not register in total. Lots of bugs going around for that. So it might be that there is still a chest out there for you to find even though the chests say it's completed.