Thank you for fast reply.
I just made parent gameObject and put DialogueSystemTrigger in this object and this parent object has only trigger and do nothing.
i removed trigger on enemy object. but it happens still.
my enemy object doesn't have trigger and when it dies and setactive(false), it shows same error
Assertion failed on expression: 'go.IsActive()'
UnityEngine.GameObject:Find(String)
PixelCrushers.DialogueSystem.SequencerTools:FindSpecifier(String, Boolean) (at Assets/Pixel Crushers/Dialogue System/Scripts/MVC/Sequencer/SequencerTools.cs:102)
PixelCrushers.DialogueSystem.SequencerTools:GetSubject(String, Transform, Transform, Transform) (at Assets/Pixel Crushers/Dialogue System/Scripts/MVC/Sequencer/SequencerTools.cs:50)
PixelCrushers.DialogueSystem.SequencerCommands.SequencerCommand:GetSubject(String, Transform) (at Assets/Pixel Crushers/Dialogue System/Scripts/MVC/Sequencer/Commands/SequencerCommand.cs:144)
PixelCrushers.DialogueSystem.SequencerCommands.SequencerCommand:GetSubject(Int32, Transform) (at Assets/Pixel Crushers/Dialogue System/Scripts/MVC/Sequencer/Commands/SequencerCommand.cs:163)
PixelCrushers.DialogueSystem.SequencerCommands.SequencerCommandNPCState:Awake() (at Assets/Scripts/SequencerCommand/SequencerCommandNPCState.cs:17)
UnityEngine.GameObject:AddComponent(Type)
PixelCrushers.DialogueSystem.Sequencer:ActivateCommand(String, String, Transform, Transform, String[]) (at Assets/Pixel Crushers/Dialogue System/Scripts/MVC/Sequencer/Sequencer.cs:733)
PixelCrushers.DialogueSystem.Sequencer:PlayCommand(QueuedSequencerCommand, String, Boolean, Single, String, String, String[]) (at Assets/Pixel Crushers/Dialogue System/Scripts/MVC/Sequencer/Sequencer.cs:682)
PixelCrushers.DialogueSystem.Sequencer:PlayCommand(QueuedSequencerCommand) (at Assets/Pixel Crushers/Dialogue System/Scripts/MVC/Sequencer/Sequencer.cs:651)
PixelCrushers.DialogueSystem.Sequencer:PlaySequence(String) (at Assets/Pixel Crushers/Dialogue System/Scripts/MVC/Sequencer/Sequencer.cs:585)
PixelCrushers.DialogueSystem.Sequencer:PlaySequence(String, Boolean, Boolean) (at Assets/Pixel Crushers/Dialogue System/Scripts/MVC/Sequencer/Sequencer.cs:595)
PixelCrushers.DialogueSystem.Sequencer:PlaySequence(String, Transform, Transform, Boolean, Boolean) (at Assets/Pixel Crushers/Dialogue System/Scripts/MVC/Sequencer/Sequencer.cs:601)
PixelCrushers.DialogueSystem.DialogueSystemController:PlaySequence(String, Transform, Transform, Boolean, Boolean, String) (at Assets/Pixel Crushers/Dialogue System/Scripts/Manager/DialogueSystemController.cs:1558)
PixelCrushers.DialogueSystem.DialogueSystemController:PlaySequence(String, Transform, Transform, Boolean) (at Assets/Pixel Crushers/Dialogue System/Scripts/Manager/DialogueSystemController.cs:1611)
PixelCrushers.DialogueSystem.DialogueSystemController:PlaySequence(String, Transform, Transform) (at Assets/Pixel Crushers/Dialogue System/Scripts/Manager/DialogueSystemController.cs:1632)
PixelCrushers.DialogueSystem.DialogueManager:PlaySequence(String, Transform, Transform) (at Assets/Pixel Crushers/Dialogue System/Scripts/Manager/DialogueManager.cs:765)
PixelCrushers.DialogueSystem.DialogueSystemTrigger:DoSequenceAction(Transform) (at Assets/Pixel Crushers/Dialogue System/Scripts/Triggers/Triggers/DialogueSystemTrigger.cs:671)
PixelCrushers.DialogueSystem.DialogueSystemTrigger:Fire(Transform) (at Assets/Pixel Crushers/Dialogue System/Scripts/Triggers/Triggers/DialogueSystemTrigger.cs:631)
PixelCrushers.DialogueSystem.DialogueSystemTrigger:TryStart(Transform, Transform) (at Assets/Pixel Crushers/Dialogue System/Scripts/Triggers/Triggers/DialogueSystemTrigger.cs:617)
PixelCrushers.DialogueSystem.DialogueSystemTrigger:TryStart(Transform) (at Assets/Pixel Crushers/Dialogue System/Scripts/Triggers/Triggers/DialogueSystemTrigger.cs:603)
PixelCrushers.DialogueSystem.DialogueSystemTrigger:OnUse() (at Assets/Pixel Crushers/Dialogue System/Scripts/Triggers/Triggers/DialogueSystemTrigger.cs:494)
UnityEngine.Events.UnityEvent:Invoke()
PixelCrushers.DialogueSystem.IncrementOnDestroy:TryIncrement() (at Assets/Pixel Crushers/Dialogue System/Scripts/Quests/IncrementOnDestroy.cs:135)
PixelCrushers.DialogueSystem.IncrementOnDestroy:OnDisable() (at Assets/Pixel Crushers/Dialogue System/Scripts/Quests/IncrementOnDestroy.cs:111)
UnityEngine.GameObject:SetActive(Boolean)
<DeadMonster>d__35:MoveNext() (at Assets/Scripts/Monster/EnemyController.cs:296)
UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator, IntPtr)