Trying to grow plants generates errors, because WTH is trying and failing to give my dandelions "repair" and "power consumption" stats. Note that the plant related errors didn't generate until after I made a grow zone and changed which plant was grown.
Error log below.
https://github.com/RedPine91/RimworldLog001/blob/e70684b64681293269e026e289ab9add200a88b4/DebugLog
On a personal note, I find this error extremely amusing. It took me an embarrassingly long time to figure out that it wasn't a plant mod that broke plants.