InvalidOperationException at GetChannelFixed

I got this error randomly, what does this mean?

Failed to call hook 'SubscribeChannel' on plugin 'DiscordCore v0.16.2' (InvalidOperationException: Collection was modified; enumeration operation may not execute.)
  at System.ThrowHelper.ThrowInvalidOperationException (System.ExceptionResource resource) [0x0000b] in <437ba245d8404784b9fbab9b439ac908>:0
  at System.Collections.Generic.List1+Enumerator[T].MoveNextRare () [0x00013] in <437ba245d8404784b9fbab9b439ac908>:0
  at System.Collections.Generic.List1+Enumerator[T].MoveNext () [0x0004a] in <437ba245d8404784b9fbab9b439ac908>:0
at System.Linq.Enumerable.TryGetFirst[TSource] (System.Collections.Generic.IEnumerable1[T] source, System.Func2[T,TResult] predicate, System.Boolean& found) [0x0004f] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
at System.Linq.Enumerable.FirstOrDefault[TSource] (System.Collections.Generic.IEnumerable1[T] source, System.Func2[T,TResult] predicate) [0x00000] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
at Oxide.Plugins.DiscordCore.GetChannel (System.String nameOrId) [0x0004d] in :0
at Oxide.Plugins.DiscordCore.SubscribeChannel (System.String channelNameOrId, Oxide.Core.Plugins.Plugin plugin, System.Func`2[T,TResult] method) [0x0002b] in :0
at Oxide.Plugins.DiscordCore.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x02ea1] in :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
This error should be fixed in version 0.16.3
Locked automatically