CosmosOS/Cosmos

I get an IL2CPU System.ArgumentException Interference Maps for generic interfaces cannot be retrieved.
The strangest part is that the code was working fine, and even If I remove the newest code added, it still does not work. It was booting fine just now

if (debug) { Console.WriteLine(cmdarr); }
switch (cmdarr[0])
{
case "cd":
try
{

                       ``` Directory.SetCurrentDirectory(cmdarr[1]);
                    }catch(DirectoryNotFoundException)
                    {
                        Console.WriteLine("OS cannot find the needed dir.");
                    };
                    break;
                case "md":
                    if(cmdarr[1].Contains(":")){
                        System.IO.Directory.CreateDirectory(cmdarr[1]);
                    }
                    else {
                        System.IO.Directory.CreateDirectory(System.IO.Directory.GetCurrentDirectory()+ cmdarr[1]); 
                    }
                    Console.WriteLine($"Created Directory {cmdarr[1]}");
                    break;
                case "prt":

                    foreach (var file in Directory.GetFiles(cmdarr[1]))
                    {
                        var content = File.ReadAllText(file);

                        Console.WriteLine("File name: " + file);
                        Console.WriteLine("File size: " + content.Length);
                        Console.WriteLine("Content: " + content);
                    }
                    break;

            }```

This is where I think the code error comes