BuildingRestriction

I am constantly getting this error

Code:

Failed to call hook 'OnEntityBuilt' on plugin 'BuildingRestriction v1.5.5' (NullReferenceException: )
  at (wrapper managed-to-native) UnityEngine.Object.GetName(UnityEngine.Object)
  at UnityEngine.Object.get_name () [0x00001] in :0
  at Oxide.Plugins.BuildingRestriction.OnEntityBuilt (Planner planner, UnityEngine.GameObject go) [0x00284] in <71c80acdca094d929cc88038df696101>:0
  at Oxide.Plugins.BuildingRestriction.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x001e5] in <71c80acdca094d929cc88038df696101>:0
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in :0
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in :0
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in :0Failed to call hook 'OnEntityBuilt' on plugin 'BuildingRestriction v1.5.5' (NullReferenceException: )
  at (wrapper managed-to-native) UnityEngine.Object.GetName(UnityEngine.Object)
  at UnityEngine.Object.get_name () [0x00001] in :0
  at Oxide.Plugins.BuildingRestriction.OnEntityBuilt (Planner planner, UnityEngine.GameObject go) [0x00284] in <71c80acdca094d929cc88038df696101>:0
  at Oxide.Plugins.BuildingRestriction.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x001e5] in <71c80acdca094d929cc88038df696101>:0
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in :0
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in :0
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in :0