Problem summary: I’m trying to build an automatic wither farm using the chunkloader upgrade however when I place a robot with the chunkloader upgrade in the same chunk as the platforms I want loaded no mobs spawn.
More details: I have placed the robot in the chunk I wanted and made sure the chunkloader was on (which it was). I changed the difficulty from normal to peaceful (to get rid of the existing mobs). Then went into spectator mode (so my character would not load any chunks.). after I changed my game mode I changed the difficulty back to normal and no mobs spawn in the chunk.