AudioMixer Script Not working ios 64bit build

NullReferenceException: A null value was found where an object instance was required. at EasyJoystick.On_TouchUp (.Gesture gesture) [0x00000] in :0 at VolumeSlider.OnValueChange () [0x00000] in :0 at UnityEngine.Events.UnityAction.Invoke () [0x00000] in :0 at EnergyBarToolkit.EnergyBarRenderer+EdgeEffectFunction.EndInvoke (IAsyncResult result) [0x00000] in :0 at UnityEngine.Events.InvokableCall.Invoke (System.Object[] args) [0x00000] in :0 at UnityEngine.Events.UnityAction.EndInvoke (IAsyncResult result) [0x00000] in :0 at UnityEngine.Events.InvokableCallList.Invoke (System.Object[] parameters) [0x00000] in :0 at UnityEngine.Events.UnityEventBase.Invoke (System.Object[] parameters) [0x00000] in :0 at Boo.Lang.Runtime.DynamicDispatching.Dispatcher.EndInvoke (IAsyncResult result) [0x00000] in :0 at UnityEngine.UI.Scrollbar.Set (Single input, Boolean sendCallback) [0x00000] in :0 at UnityEngine.UI.Scrollbar.Set (Single input) [0x00000] in :0 at UnityEngine.UI.Scrollbar.UpdateDrag (UnityEngine.EventSystems.PointerEventData eventData) [0x00000] in :0 at UnityEngine.UI.Scrollbar.OnDrag (UnityEngine.EventSystems.PointerEventData eventData) [0x00000] in :0 at UnityEngine.UI.Scrollbar.UnityEngine.UI.ICanvasElement.get_transform () [0x00000] in :0 at UnityEngine.EventSystems.ExecuteEvents.Execute (IDragHandler handler, UnityEngine.EventSystems.BaseEventData eventData) [0x00000] in :0 at Boo.Lang.Runtime.DynamicDispatching.Dispatcher.EndInvoke (IAsyncResult result) [0x00000] in :0 at System.Array.InternalArray__IEnumerable_GetEnumerator[KeyValuePair`2] () [0x00000] in :0 at UnityEngine.EventSystems.ExecuteEvents.Execute[IDragHandler] () [0x00000] in :0 at UnityEngine.EventSystems.PointerInputModule.ProcessDrag (UnityEngine.EventSystems.PointerEventData pointerEvent) [0x00000] in :0 at UnityEngine.UI.Scrollbar.UnityEngine.UI.ICanvasElement.get_transform () [0x00000] in :0 at UnityEngine.EventSystems.TouchInputModule.ProcessTouchEvents () [0x00000] in :0 at UnityEngine.EventSystems.TouchInputModule.Process () [0x00000] in :0 at EnergyBarToolkit.EnergyBarRenderer+EdgeEffectFunction.EndInvoke (IAsyncResult result) [0x00000] in :0 at UnityEngine.EventSystems.EventSystem.Update () [0x00000] in :0 at Replacements.MSCompatUnicodeTable.get_IsReady () [0x00000] in :0 Replacements.MSCompatUnicodeTable:get_IsReady() UnityEngine.Debug:Internal_LogException(Exception, Object) UnityEngine.Debug:LogException(Exception) UnityEngine.EventSystems.ExecuteEvents:Execute() UnityEngine.EventSystems.PointerInputModule:processDrag(PointerEventData) UnityEngine.UI.Scrollbar:UnityEngine.UI.ICanvasElement.get_transform() UnityEngine.EventSystems.TouchInputModule:processTouchEvents() UnityEngine.EventSystems.TouchInputModule:process() EnergyBarToolkit.EdgeEffectFunction:EndInvoke(IAsyncResult) UnityEngine.EventSystems.EventSystem:Update() Replacements.MSCompatUnicodeTable:get_IsReady()

(Filename: currently not available on il2cpp Line: -1)