Enderman Farm troubles

[gavin1928374655]

So recently moses and I made a farm, this farm also happens to not work. When we started making it enderman were dropping down just fine. As soonas we finished it no more spawned. Joshskiizz's farm also doesnt work, the two farms are nowhere near each other though. our farm: x 545 z -8 josh's farm x 187 z 960. I dont get why the two have suddenly stopped working. If anyone knows why / has a fix please let me know.

note: the farms are in the new guest end

[gavin1928374655]

locked spawn rates are back up

idk what happened