Unity  E  NullReferenceException: Object reference not set to an instance of an object.
                         E    at BarricadesController.<StartTimer>b__50_0 (System.Int64 _) [0x00000] in <00000000000000000000000000000000>:0
                         E    at System.Action`1[T].Invoke (T obj) [0x00000] in <00000000000000000000000000000000>:0
                         E    at UniRx.Operators.TimerObservable+Timer.OnNext () [0x00000] in <00000000000000000000000000000000>:0
                         E    at UniRx.Operators.TimerObservable+<>c__DisplayClass6_0.<SubscribeCore>b__0 () [0x00000] in <00000000000000000000000000000000>:0
                         E    at System.Action.Invoke () [0x00000] in <00000000000000000000000000000000>:0
                         E    at UniRx.MainThreadDispatcher.UnsafeSend (System.Action action) [0x00000] in <00000000000000000000000000000000>:0
                         E    at UniRx.Scheduler+MainThreadScheduler+<DelayAction>d__2.MoveNext () [0x00000] in <00000000000000000000000000000000>:0
                         E    at UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) [0x00000] in <00000000000000
                            000000000000000000>:0