Attempted to calculate value for disabled stat ConstructSuccessChance; this is meant as a consistency check, either set the stat to neverDisabled or ensure this pawn cannot accidentally use this stat (thing=Zacherie)
Verse.Log:Error(String, Boolean)
Verse.Log:ErrorOnce(String, Int32, Boolean)
RimWorld.StatWorker:DMD<DMD<GetValueUnfinalized_Patch2>?1112066304::GetValueUnfinalized_Patch2>(StatWorker, StatRequest, Boolean)
RimWorld.StatWorker:GetValue(StatRequest, Boolean)
RimWorld.StatWorker:GetValue(Thing, Boolean)
RimWorld.StatExtension:DMD<DMD<GetStatValue_Patch2>?-775849984::GetStatValue_Patch2>(Thing, StatDef, Boolean)
RoadsOfTheRim.PawnBuildingUtility:ConstructionValue(Pawn)
RoadsOfTheRim.PawnBuildingUtility:ShowConstructionValue(Pawn)
RoadsOfTheRim.WITab_Caravan_Build:DoRow(Rect, Pawn)
RoadsOfTheRim.WITab_Caravan_Build:DoRow(Single&, Rect, Rect, Pawn)
RoadsOfTheRim.WITab_Caravan_Build:DoRows(Single&, Rect, Rect)
RoadsOfTheRim.WITab_Caravan_Build:FillTab()
Verse.<>c__DisplayClass14_0:<DoTabGUI>b__0()
Verse.ImmediateWindow:DoWindowContents(Rect)
Verse.Window:InnerWindowOnGUI(Int32)
UnityEngine.GUI:CallWindowDelegate(WindowFunction, Int32, Int32, GUISkin, Int32, Single, Single, GUIStyle)

Got the same thing for ConstructionSpeed.