I'm having issue with following stack trace. I can't understand what's causing that.

**I've been searching solution for this problem I can't find one. Kindly help me.** UnityEngine.RectTransformUtility.ScreenPointToWorldPointInRectangle (UnityEngine.RectTransform rect, UnityEngine.Vector2 screenPoint, UnityEngine.Camera cam, UnityEngine.Vector3& worldPoint) (at <00000000000000000000000000000000>:0) UnityEngine.RectTransformUtility.ScreenPointToLocalPointInRectangle (UnityEngine.RectTransform rect, UnityEngine.Vector2 screenPoint, UnityEngine.Camera cam, UnityEngine.Vector2& localPoint) (at <00000000000000000000000000000000>:0) UnityEngine.UI.Scrollbar+d__58.MoveNext () (at <00000000000000000000000000000000>:0) UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) (at <00000000000000000000000000000000>:0) UnityEngine.UI.Scrollbar.OnPointerDown (UnityEngine.EventSystems.PointerEventData eventData) (at <00000000000000000000000000000000>:0) UnityEngine.EventSystems.ExecuteEvents+EventFunction`1[T1].Invoke (T1 handler, UnityEngine.EventSystems.BaseEventData eventData) (at <00000000000000000000000000000000>:0) UnityEngine.EventSystems.ExecuteEvents.Execute[T] (UnityEngine.GameObject target, UnityEngine.EventSystems.BaseEventData eventData, UnityEngine.EventSystems.ExecuteEvents+EventFunction`1[T1] functor) (at <00000000000000000000000000000000>:0) UnityEngine.EventSystems.ExecuteEvents.ExecuteHierarchy[T] (UnityEngine.GameObject root, UnityEngine.EventSystems.BaseEventData eventData, UnityEngine.EventSystems.ExecuteEvents+EventFunction`1[T1] callbackFunction) (at <00000000000000000000000000000000>:0) UnityEngine.EventSystems.StandaloneInputModule.ProcessTouchPress (UnityEngine.EventSystems.PointerEventData pointerEvent, System.Boolean pressed, System.Boolean released) (at <00000000000000000000000000000000>:0) UnityEngine.EventSystems.StandaloneInputModule.ProcessTouchEvents () (at <00000000000000000000000000000000>:0) UnityEngine.EventSystems.StandaloneInputModule.Process () (at <00000000000000000000000000000000>:0) UnityEngine.EventSystems.StandaloneInputModule:Process()