ComputerCraft do not work with "computer controlled seed analyzer" from AgriCraft mod. Please, fix it.
Function peripheral.wrap(side) returns nil.

@Scherbakov-eugene Don't report CC Tweaked issues here, this repo is dead. Go to https://github.com/cc-tweaked/CC-Tweaked/issues instead.

Also this is a problem caused by AgriCraft, so report it to them instead.

@ajh123 you've necro'd a year-old issue three times. Yes, this repo is dead, but these issues were too.

ComputerCraft don't seem to be anymore in development. If you are playing in 1.12 or later minecraft then its most likely you are playing using CC: Tweaked.
Link for convenience: https://github.com/cc-tweaked/CC-Tweaked

Additionally peripherals are added by mods so if you are 100% sure that peripheral from AgriCraft mod don't show up its most likely caused by AgriCraft (Or you have optifine installed.)

I try to use CC: Tweaked. Same problem.
local a = peripheral.wrap("bottom")
print(a)
Result - nil.