Exception in "!reverse"

[NikolayIT]

Error while executing "!reverse": System.NullReferenceException: Object reference not set to an instance of an object.
   at TcecEvaluationBot.ConsoleUI.Commands.ReverseCommand.<>c.<ToShortNotation>b__3_1(Move x) in C:\Dev\TcecEvaluationBot\src\TcecEvaluationBot.ConsoleUI\Commands\ReverseCommand.cs:line 56
   at System.Linq.Enumerable.WhereListIterator`1.ToList()
   at TcecEvaluationBot.ConsoleUI.Commands.ReverseCommand.ToShortNotation(Game game, Int32 firstNPlies) in C:\Dev\TcecEvaluationBot\src\TcecEvaluationBot.ConsoleUI\Commands\ReverseCommand.cs:line 56
   at TcecEvaluationBot.ConsoleUI.Commands.ReverseCommand.Execute(String message) in C:\Dev\TcecEvaluationBot\src\TcecEvaluationBot.ConsoleUI\Commands\ReverseCommand.cs:line 42
   at TcecEvaluationBot.ConsoleUI.TwitchBot.<>c__DisplayClass7_0.<Run>b__2(Object sender, OnMessageReceivedArgs arguments) in C:\Dev\TcecEvaluationBot\src\TcecEvaluationBot.ConsoleUI\TwitchBot.cs:line 106```