I made this mob farm in Infinity using cursed earth, fans, and grinders. I did this near a nether fortress so that way I get blazes and wither skellies. I built it over the fortress (as shown), and I get nothing but pigment and wolves. The cursed earth clearly does not recognize the fortress. My question is why not? Does the cursed earth have to be in a certain "range" or "nether fortress biome?" The obvious solution is moving it, but where?