Stone deposit quest, stuck for days

So I bought the Settlers Online edition 2 days ago at the shop and started builing my village.
I bought a geologist and started discovering stone deposits till I reached the max.
Now I got to the quest to discover a stone deposit with the geologist but there aren't any free ones anymore.
I have to wait days or even weeks till one stone deposit reach out. It's even more sad that I couldn't build a provision house so I could gain stone while waiting.

Update: Storage limit of stone is 500. My only option to DELETE, BUILD, DELETE my tavern. When my tavern is deleted my stone goes to 486. Building a tavern takes 10 minutes while my stone limit reaches 500, the building hasn't finshed yet.

UPDATE 2: THANKS for fixing my quest devs!