how can i fix this. anyone know?

Failed to call hook 'OnDispenserGather' on plugin 'ZLevelsRemastered v2.9.5' (InvalidCastException: Specified cast is not valid.)
  at Oxide.Plugins.ZLevelsRemastered.levelHandler (BasePlayer player, Item item, System.String skill) [0x00069] in <7b5bc635f0b24429bcaa76d9e49f99b7>:0

  at Oxide.Plugins.ZLevelsRemastered.OnDispenserGather (ResourceDispenser dispenser, BaseEntity entity, Item item) [0x00183] in <7b5bc635f0b24429bcaa76d9e49f99b7>:0

  at Oxide.Plugins.ZLevelsRemastered.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x008d0] in <7b5bc635f0b24429bcaa76d9e49f99b7>:0

  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <9affce1cd15c4ec183941adef8db1722>:0

  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <4452f821def6406d834e4149849fe7ea>:0

  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <4452f821def6406d834e4149849fe7ea>:0