Random crash

Exception in: (SpiceGrinder).WorkChore`1+States[[SpiceGrinderWorkable, Assembly-CSharp, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null]].root.work.StopWork()
System.NullReferenceException: Object reference not set to an instance of an object
  at SpiceGrinder+StatesInstance.SpiceFood () [0x00006] in <cb20703507b14eea8088dbc44abf7f85>:0
  at SpiceGrinderWorkable.OnCompleteWork (Worker worker) [0x00000] in <cb20703507b14eea8088dbc44abf7f85>:0
  at Workable.CompleteWork (Worker worker) [0x0000f] in <cb20703507b14eea8088dbc44abf7f85>:0
  at Worker.CompleteWork () [0x00065] in <cb20703507b14eea8088dbc44abf7f85>:0
  at Worker.StopWork () [0x00021] in <cb20703507b14eea8088dbc44abf7f85>:0
  at GameStateMachine`4+State+<>c__DisplayClass84_0[StateMachineType,StateMachineInstanceType,MasterType,DefType].<ToggleWork>b__2 (StateMachineInstanceType smi) [0x0000c] in <cb20703507b14eea8088dbc44abf7f85>:0
  at StateMachine`4+GenericInstance[StateMachineType,StateMachineInstanceType,MasterType,DefType].ExecuteActions (StateMachine`4+State[StateMachineType,StateMachineInstanceType,MasterType,DefType] state, System.Collections.Generic.List`1[T] actions) [0x00048] in <cb20703507b14eea8088dbc44abf7f85>:0

  at UnityEngine.Debug.LogError (System.Object message, UnityEngine.Object context) [0x00000] in <72b60a3dd8cd4f12a155b761a1af9144>:0
  at Debug.LogError (System.Object obj, UnityEngine.Object context) [0x00000] in <1b5c2ff4f53d4a48b7159ed84d905978>:0
  at DebugUtil.LogErrorArgs (UnityEngine.Object context, System.Object[] objs) [0x00000] in <1b5c2ff4f53d4a48b7159ed84d905978>:0
  at DebugUtil.LogException (UnityEngine.Object context, System.String errorMessage, System.Exception e) [0x00000] in <1b5c2ff4f53d4a48b7159ed84d905978>:0
  at StateMachine`4+GenericInstance[StateMachineType,StateMachineInstanceType,MasterType,DefType].ExecuteActions (StateMachine`4+State[StateMachineType,StateMachineInstanceType,MasterType,DefType] state, System.Collections.Generic.List`1[T] actions) [0x00000] in <cb20703507b14eea8088dbc44abf7f85>:0
  at StateMachine`4+GenericInstance[StateMachineType,StateMachineInstanceType,MasterType,DefType].PopState () [0x00000] in <cb20703507b14eea8088dbc44abf7f85>:0
  at StateMachine`4+GenericInstance[StateMachineType,StateMachineInstanceType,MasterType,DefType].StopSM (System.String reason) [0x00000] in <cb20703507b14eea8088dbc44abf7f85>:0
  at Chore.End (System.String reason) [0x00000] in <cb20703507b14eea8088dbc44abf7f85>:0
  at Chore.Cancel (System.String reason) [0x00000] in <cb20703507b14eea8088dbc44abf7f85>:0
  at GameStateMachine`4+State[StateMachineType,StateMachineInstanceType,MasterType,DefType].ClearChore (StateMachineInstanceType smi, System.Int32 chore_data_idx, System.Int32 callback_data_idx) [0x00000] in <cb20703507b14eea8088dbc44abf7f85>:0
  at GameStateMachine`4+State+<>c__DisplayClass63_0[StateMachineType,StateMachineInstanceType,MasterType,DefType].<ToggleRecurringChore>b__1 (StateMachineInstanceType smi) [0x00000] in <cb20703507b14eea8088dbc44abf7f85>:0
  at StateMachine`4+GenericInstance[StateMachineType,StateMachineInstanceType,MasterType,DefType].ExecuteActions (StateMachine`4+State[StateMachineType,StateMachineInstanceType,MasterType,DefType] state, System.Collections.Generic.List`1[T] actions) [0x00000] in <cb20703507b14eea8088dbc44abf7f85>:0
  at StateMachine`4+GenericInstance[StateMachineType,StateMachineInstanceType,MasterType,DefType].PopState () [0x00000] in <cb20703507b14eea8088dbc44abf7f85>:0
  at StateMachine`4+GenericInstance[StateMachineType,StateMachineInstanceType,MasterType,DefType].GoTo (StateMachine+BaseState base_state) [0x00000] in <cb20703507b14eea8088dbc44abf7f85>:0
  at StateMachine`4+Parameter`1+Transition[StateMachineType,StateMachineInstanceType,MasterType,DefType,ParameterType].Evaluate (StateMachine+Instance smi) [0x00000] in <cb20703507b14eea8088dbc44abf7f85>:0
  at StateMachine`4+Parameter`1+Context[StateMachineType,StateMachineInstanceType,MasterType,DefType,ParameterType].Set (ParameterType value, StateMachineInstanceType smi, System.Boolean silenceEvents) [0x00000] in <cb20703507b14eea8088dbc44abf7f85>:0
  at StateMachine`4+Parameter`1[StateMachineType,StateMachineInstanceType,MasterType,DefType,ParameterType].Set (ParameterType value, StateMachineInstanceType smi, System.Boolean silenceEvents) [0x00000] in <cb20703507b14eea8088dbc44abf7f85>:0
  at SpiceGrinder.OnStorageChanged (SpiceGrinder+StatesInstance smi, System.Object data) [0x00000] in <cb20703507b14eea8088dbc44abf7f85>:0
  at GameStateMachine`4+GameEvent+<>c__DisplayClass6_0[StateMachineType,StateMachineInstanceType,MasterType,DefType].<Subscribe>b__0 (System.Object d) [0x00000] in <cb20703507b14eea8088dbc44abf7f85>:0
  at EventSystem.Trigger (UnityEngine.GameObject go, System.Int32 hash, System.Object data) [0x00000] in <1b5c2ff4f53d4a48b7159ed84d905978>:0
  at KMonoBehaviour.Trigger (System.Int32 hash, System.Object data) [0x00000] in <1b5c2ff4f53d4a48b7159ed84d905978>:0
  at Storage.Remove (UnityEngine.GameObject go, System.Boolean do_disease_transfer) [0x00000] in <cb20703507b14eea8088dbc44abf7f85>:0
  at Pickupable.OnCleanUp () [0x00000] in <cb20703507b14eea8088dbc44abf7f85>:0
  at KMonoBehaviour.OnDestroy () [0x00000] in <1b5c2ff4f53d4a48b7159ed84d905978>:0
Build: U43-526233-S