Exception: no father defined.

Hediff_Pregnant::DoBirthSpawn() - no father defined Verse.Log:Warning(String) rjw.PATCH_Hediff_Pregnant_DoBirthSpawn:on_begin_DoBirthSpawn(Pawn&, Pawn&) Verse.Hediff_Pregnant:DoBirthSpawn_Patch2(Pawn, Pawn) Verse.Dialog_DebugActionsMenu:<DoListingItems_MapTools>m__AF1(Pawn) Verse.c__AnonStorey58D:<>m__A92() Verse.DebugTool:DebugToolOnGUI() Verse.DebugTools:DebugToolsOnGUI() RimWorld.UIRoot_Play:UIRootOnGUI() Verse.Root:OnGUI()