Value cannot be null.
Parameter name: key
   at System.Collections.Generic.Dictionary`2.FindEntry(TKey key)
   at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
   at DungeonCrawler.NetworkGameManagerComponent.AddDeathMarkerForNetworkedPlayer(RemotePlayerController remoteController) in C:\Users\David\Source\Repos\DungeonCrawler\DungeonCrawler_Steam\DungeonCrawlerShared\GameComponents\NetworkGameManagerComponent.cs:line 7674
   at DungeonCrawler.NetworkGameManagerComponent.UpdateIncomingNetworkActionList_PlayerKilled(Int32& i, NetworkAction& networkAction) in C:\Users\David\Source\Repos\DungeonCrawler\DungeonCrawler_Steam\DungeonCrawlerShared\GameComponents\NetworkGameManagerComponent.cs:line 7646
   at DungeonCrawler.NetworkGameManagerComponent.UpdateIncomingNetworkActionList(GameTime gameTime) in C:\Users\David\Source\Repos\DungeonCrawler\DungeonCrawler_Steam\DungeonCrawlerShared\GameComponents\NetworkGameManagerComponent.cs:line 5574
   at DungeonCrawler.NetworkGameManagerComponent.UpdateNetworkSession(GameTime gameTime) in C:\Users\David\Source\Repos\DungeonCrawler\DungeonCrawler_Steam\DungeonCrawlerShared\GameComponents\NetworkGameManagerComponent.cs:line 3735
   at DungeonCrawler.NetworkGameManagerComponent.Update(GameTime gameTime) in C:\Users\David\Source\Repos\DungeonCrawler\DungeonCrawler_Steam\DungeonCrawlerShared\GameComponents\NetworkGameManagerComponent.cs:line 3090
   at Microsoft.Xna.Framework.Game.Update(GameTime gameTime)
   at DungeonCrawler.DungeonCrawlerGame.Update(GameTime gameTime) in C:\Users\David\Source\Repos\DungeonCrawler\DungeonCrawler_Steam\DungeonCrawlerShared\DungeonCrawlerGame.cs:line 903
   at Microsoft.Xna.Framework.Game.Tick()
   at Microsoft.Xna.Framework.Game.HostIdle(Object sender, EventArgs e)
   at Microsoft.Xna.Framework.GameHost.OnIdle()
   at Microsoft.Xna.Framework.WindowsGameHost.RunOneFrame()
   at Microsoft.Xna.Framework.WindowsGameHost.ApplicationIdle(Object sender, EventArgs e)
   at System.Windows.Forms.Application.ThreadContext.System.Windows.Forms.UnsafeNativeMethods.IMsoComponent.FDoIdle(Int32 grfidlef)
   at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.Run(Form mainForm)
   at Microsoft.Xna.Framework.WindowsGameHost.Run()
   at Microsoft.Xna.Framework.Game.RunGame(Boolean useBlockingRun)
   at DungeonCrawler.Program.Main(String[] args) in C:\Users\David\Source\Repos\DungeonCrawler\DungeonCrawler_Steam\DungeonCrawlerShared\Program.cs:line 150