Since there seem to be a lot of impossible quests, either because the item required is restricted, or the quest is bugged itself.
In case you find such quest, you can respond to this thread, in order for us to fix it. (Trying to bypass the bug or the item restriction is not a good idea, and can be against the rules)
In order to help us fix it, respond with filling these:
Required Item Name:
Quest Name:
Quest Tab Name (and sub tab if exists, ex. space exploration/the moon):
Notices (ex. restricted item or item not accepted):
Solution (if you have any possible) :
Also a screenshot of the quest's location could help us but thats optional.
Please make sure that no one has reported the same quest below.
Note: It may take some time for us to fix it after it's reported, so don't attempt to spam this post please