Error when trying to fire in direct control mode without ammunition

Exception in JobDriver tick for pawn Perkins driver=JobDriver_AttackStatic (toilIndex=1)
System.NullReferenceException: Object reference not set to an instance of an object
at Verse.AI.JobDriver_AttackStatic+<>c__DisplayClass4_0.<MakeNewToils>b__1 () [0x0012b] in <b622be138520405395567b3b552469e1>:0
at (wrapper dynamic-method) Verse.AI.JobDriver.Verse.AI.JobDriver.DriverTick_Patch0(Verse.AI.JobDriver)
UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Error (string)
Verse.AI.JobUtility:TryStartErrorRecoverJob (Verse.Pawn,string,System.Exception,Verse.AI.JobDriver)
(wrapper dynamic-method) Verse.AI.JobDriver:Verse.AI.JobDriver.DriverTick_Patch0 (Verse.AI.JobDriver)
(wrapper dynamic-method) Verse.AI.Pawn_JobTracker:Verse.AI.Pawn_JobTracker.JobTrackerTick_Patch0 (Verse.AI.Pawn_JobTracker)
(wrapper dynamic-method) Verse.Pawn:Verse.Pawn.Tick_Patch1 (Verse.Pawn)
Verse.TickList:Tick ()
(wrapper dynamic-method) Verse.TickManager:Verse.TickManager.DoSingleTick_Patch1 (Verse.TickManager)
Verse.TickManager:TickManagerUpdate ()
(wrapper dynamic-method) Verse.Game:Verse.Game.UpdatePlay_Patch1 (Verse.Game)
Verse.Root_Play:Update ()