Game crashes when i enter in certain chunks from koentus

actually you enter those chunks and then mobs stop, arrows don't work and mineing works but doesn't give items, is like everything frezzes, when you try to save the game crashes. When i join back everything goes back to normal, but if i enter those chunks again everything goes to shit again. I wanted to enter those chunks because they had Koentus metiorites pls fix

its worse now i can't exit the chunk