Andy the Patrol:
Finding the reason the force field is getting weaker is important. But the bigger problem is that strange monsters are threatening the force field. If the force field can't withstand the attacks and collapses...
Right now Paterson's Disciple Bacon is inside the Sea of Spores studying how to reinforce the force field. Perhaps it's a good idea to go and ask him. If you could kill 20 each of Giant Fungi, Rotting Trees, Corroded Skeletons, Rotten Corpses, Corpse Spiders, and Explosive Spiders inside the Sea of Spores on your way, then I won't have to worry about the force field collapsing.