The Farmer module has gone missing. I am not getting any errors. Over on tukui.org there was an old comment talking about getting rid of the module but I had it working just a couple of days ago. The addon doesn't seem to have been updated for several weeks so I'm not sure why it would just stop working.

Hi, The farmer module was disabled on 11 Aug 2016. Maybe you still had some of the old source in your folder.

I will see if I can add the option to enable/disable it as a separate module.