Hello guys
i become this server crash please help me
[15:12:20][ERROR][UnhandledExceptionHandler]: Object reference not set to an instance of an object.
System.NullReferenceException: Object reference not set to an instance of an object.
at OpenNos.GameObject.Helpers.DamageHelper.CalculateD amage(BattleEntity attacker, BattleEntity defender, Skill skill, Int32& hitMode, Boolean& onyxWings, Boolean attackGreaterDistance)
at OpenNos.GameObject.MapMonster.<>c__DisplayClass253 _0.<TargetHit>b__0(Int64 obs)
at System.Reactive.AnonymousSafeObserver`1.OnNext(T value)
at System.Reactive.Linq.ObservableImpl.Timer.Single._ .Invoke()
at System.Reactive.Concurrency.Scheduler.Invoke(ISche duler scheduler, Action action)
at System.Reactive.Concurrency.DefaultScheduler.<>c__ DisplayClass5_0`1.<Schedule>b__0(Object _)
at System.Threading.ExecutionContext.RunInternal(Exec utionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionCon text executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.QueueUserWorkItemCallback.System. Threading.IThreadPoolWorkItem.ExecuteWorkItem()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
[15:12:20][DEBUG][UnhandledExceptionHandler]: Server crashed! Rebooting gracefully...
[Database] Character Save will initialize
[15:12:20][ERROR][UnhandledExceptionHandler]: Object reference not set to an instance of an object.
System.NullReferenceException: Object reference not set to an instance of an object.
at OpenNos.GameObject.Helpers.DamageHelper.CalculateD amage(BattleEntity attacker, BattleEntity defender, Skill skill, Int32& hitMode, Boolean& onyxWings, Boolean attackGreaterDistance)
at OpenNos.GameObject.MapMonster.<>c__DisplayClass253 _0.<TargetHit>b__0(Int64 obs)
at System.Reactive.AnonymousSafeObserver`1.OnNext(T value)
at System.Reactive.Linq.ObservableImpl.Timer.Single._ .Invoke()
at System.Reactive.Concurrency.Scheduler.Invoke(ISche duler scheduler, Action action)
at System.Reactive.Concurrency.DefaultScheduler.<>c__ DisplayClass5_0`1.<Schedule>b__0(Object _)
at System.Threading.ExecutionContext.RunInternal(Exec utionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionCon text executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.QueueUserWorkItemCallback.System. Threading.IThreadPoolWorkItem.ExecuteWorkItem()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
[15:12:20][DEBUG][UnhandledExceptionHandler]: Server crashed! Rebooting gracefully..






