failed to call hook

Failed to call hook 'OnEntityBuilt' on plugin 'FurnaceLevels v1.4.1' (NullReferenceException: Object reference not set to an instance of an object)
at Oxide.Plugins.FurnaceLevels.OnEntityBuilt (Planner plan, UnityEngine.GameObject go) [0x00027] in <da52751c104d41ca888fc2600cf662a3>:0
at Oxide.Plugins.FurnaceLevels.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00546] in <da52751c104d41ca888fc2600cf662a3>:0
at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <09575a60985045248bcb43b20faeeb99>:0
at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <bae5f1223fce49c493b01571c99dce02>:0
at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <bae5f1223fce49c493b01571c99dce02>:0

i already delete the old config, and still get this problem

Changed Status from Pending to Closed

Changed Fixed In to 1.4.4