I'm using RimFridge: Now with Shelves! and am getting this error when beer is in a fridge:
Exception ticking Beer1442733 (at (116, 0, 183)): System.NullReferenceException: Object reference not set to an instance of an object
at LTS_Systems.Harmony.Harmony.GetTemperatureForCell_PreFix (System.Single __result, Verse.Map map, Verse.IntVec3 c) [0x00001] in <93533426531e47c1a0b1927df4616a4e>:0
at (wrapper dynamic-method) Verse.GenTemperature.Verse.GenTemperature.GetTemperatureForCell_Patch2(Verse.IntVec3,Verse.Map)
at Verse.GridsUtility.GetTemperature (Verse.IntVec3 loc, Verse.Map map) [0x00000] in <3126aca1aad041dcbdeda807cfe004bf>:0
at RimFridge.CompFrosty.CompTickRare () [0x0005f] in <36f2c7b3ace44324b160bb0f3a7e4e80>:0
at Verse.ThingWithComps.TickRare () [0x00024] in <3126aca1aad041dcbdeda807cfe004bf>:0
at (wrapper dynamic-method) Verse.TickList.Verse.TickList.Tick_Patch2(Verse.TickList)
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) Verse.Log:Verse.Log.Error_Patch1 (string)
(wrapper dynamic-method) Verse.TickList:Verse.TickList.Tick_Patch2 (Verse.TickList)
(wrapper dynamic-method) Verse.TickManager:Verse.TickManager.DoSingleTick_Patch7 (Verse.TickManager)
Verse.TickManager:TickManagerUpdate ()
(wrapper dynamic-method) Verse.Game:Verse.Game.UpdatePlay_Patch1 (Verse.Game)
(wrapper dynamic-method) Verse.Root_Play:Verse.Root_Play.Update_Patch0 (Verse.Root_Play)

https://gist.github.com/96b5f258d484e4277516125fb35d6746

It gets spammed over and over.

EDIT: Even putting it out of the fridge continued with the errors until I deleted the beer so maybe the fridge started it but it broke after that. It's weird because I think I had beer around before and it was fine.