InvalidOperationException at ClearGuardsError

Hi there im getting this in the console. 

Failed to call hook 'OnEntitySpawned' on plugin 'BradleyGuards v1.2.9' (InvalidOperationException: Collection was modified; enumeration operation may not execute.)
  at System.Collections.Generic.HashSet`1+Enumerator[T].MoveNext () [0x00013] in <351e49e2a5bf4fd6beabb458ce2255f3>:0 
  at Oxide.Plugins.BradleyGuards.ClearGuards () [0x00037] in <33530e7e92854237b8f1419b7e9c5555>:0 
  at Oxide.Plugins.BradleyGuards.OnAPCSpawned (BradleyAPC bradley) [0x00057] in <33530e7e92854237b8f1419b7e9c5555>:0 
  at Oxide.Plugins.BradleyGuards.OnEntitySpawned (BradleyAPC bradley) [0x00000] in <33530e7e92854237b8f1419b7e9c5555>:0 
  at Oxide.Plugins.BradleyGuards.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00236] in <33530e7e92854237b8f1419b7e9c5555>: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 
should be fixed in latested update.