Need Help source Mr.Omany 5669

I'm using source 5669 by mr.omany and I'm having the following problem:

System.NullReferenceException: Referência de objeto não definida para uma instância de um objeto.
em Conquer_Online_Server.Client.GameState.Send(IPacke t buffer) na C:\Users\Administrator\Desktop\BlooD-TP(S)\My Source\Client\GameState.cs:linha 112
em Conquer_Online_Server.Network.PacketHandler.Append Connect(Connect appendConnect, GameState client) na C:\Users\Administrator\Desktop\BlooD-TP(S)\My Source\Network\PacketHandler.cs:linha 15023
em Conquer_Online_Server.Network.PacketHandler.Handle (Byte[] packet, GameState client) na C:\Users\Administrator\Desktop\BlooD-TP(S)\My Source\Network\PacketHandler.cs:linha 1064
em Conquer_Online_Server.Client.GameState.Handle(Byte[] buffer) na C:\Users\Administrator\Desktop\BlooD-TP(S)\My Source\Client\GameState.cs:linha 207
em Conquer_Online_Server.Program.GameServer_AnnounceR eceive(Byte[] arg1, ISocketWrapper arg2) na C:\Users\Administrator\Desktop\BlooD-TP(S)\My Source\Program.cs:linha 1465
em Conquer_Online_Server.Network.Sockets.AsyncSocket. AsyncReceive(IAsyncResult res) na C:\Users\Administrator\Desktop\BlooD-TP(S)\My Source\Network\Sockets\AsyncSocket.cs:linha 89


and when I create a new account I don’t log in, just keep loading "loagging into server game"

i followed this guide
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Throw that source in the trash and buy a udemy C# course before trying to develop a server. It would cost you 19,99BRL