I don't know if it's this mod, Vehicle Framework or Colonial Shuttle.
Exception ticking hediff makes me think this is the most likely, but that's mostly just a guess

Exception ticking hediff (PsychicAgonizer brain ticksSinceCreation=684) for pawn Shark. Removing hediff... Exception: System.NullReferenceException: Object reference not set to an instance of an object
[Ref BB82DD06] Duplicate stacktrace, see ref for original
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.Log.Error_Patch1 (string)
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.Pawn_HealthTracker.HealthTick_Patch0 (Verse.Pawn_HealthTracker)
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.Pawn.Tick_Patch1 (Verse.Pawn)
Verse.ThingOwner:ThingOwnerTick (bool)
Vehicles.VehicleHandler:Tick ()
Vehicles.VehiclePawn:TickHandlers ()
Vehicles.VehiclePawn:BaseTickOptimized ()
Vehicles.VehiclePawn:Tick ()
Verse.TickList:Tick ()
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.TickManager.DoSingleTick_Patch3 (Verse.TickManager)
Verse.TickManager:TickManagerUpdate ()
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.Game.UpdatePlay_Patch3 (Verse.Game)
Verse.Root_Play:Update ()