ParameterMissingException when parsing equal-separated key-value pair args #3

namespace NginxGUI
{
 internal class NginxRunConfig
 {
 [Parameter("--command", Description = "Path of the nginx command")]
 public string Command;
 [Parameter("--prefix")]
 public string Prefix;
 [Parameter("--pid-path")]
 public string PidPath;
 [Parameter("--error-log-path")]
 public string ErrorLogPath;
 }
}

namespace NginxGUI
{
 internal static class Program
 {
 [STAThread]
 static void Main(string[] args)
 {
 NginxRunConfig rc = null;
 CommanderParser<NginxRunConfig> parser = new CommanderParser<NginxRunConfig>();
 parser.Add(args)
 .Separators(Separators.Equals)
 .Bindings(BindingFlags.Public | BindingFlags.Instance);
 try
 {
 rc = parser.Parse();
 }
 catch (ParameterMissingException ex)
 {
 Console.WriteLine("Missing parameter: " + ex.ParameterName);
 }
 catch (ParameterFormatException ex)
 {
 Console.WriteLine(ex.Message);
 }
 // ...
 }
 }
}

--command=C:\Library\nginx-1.22.0\nginx.exe --prefix=C:\Library\nginx-1.22.0 --pid-path=logs\nginx.pid --error-log-path=logs\error.log