System.InvalidOperationException: Operations that change non-concurrent collections must have exclusive access. A concurrent update was performed on this collection and corrupted its state. The collection's state is no longer correct.
at System.Collections.Generic.HashSet`1.AddIfNotPresent(T value, Int32& location)
at System.Collections.Generic.HashSet`1.Add(T item)
at MixItUp.Base.Services.External.ResponsiveVoiceService.Overlay_OnPacketReceived(Object sender, OverlayV3Packet packet) in D:\CODE\com.mixitupapp\Desktop\MixItUp.Base\Services\External\ResponsiveVoiceService.cs:line 194
at MixItUp.Base.Services.OverlayEndpointV3Service.WebSocketServer_OnPacketReceived(Object sender, OverlayV3Packet packet) in D:\CODE\com.mixitupapp\Desktop\MixItUp.Base\Services\OverlayV3Service.cs:line 713
at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__128_1(Object state)
at System.Threading.QueueUserWorkItemCallback.Execute()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart()
at System.Environment.get_StackTrace()
at MixItUp.WPF.App.HandleCrash(Exception ex) in D:\CODE\com.mixitupapp\Desktop\MixItUp.WPF\App.xaml.cs:line 172
at MixItUp.WPF.App.CurrentDomain_UnhandledException(Object sender, UnhandledExceptionEventArgs e) in D:\CODE\com.mixitupapp\Desktop\MixItUp.WPF\App.xaml.cs:line 144
at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__128_1(Object state)
at System.Threading.QueueUserWorkItemCallback.Execute()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart()
version 1.6.30