Method takes '0' arguments

namespace Jokle.csproj
{
    public partial class JokleBokle
    {       
        public Form1 RWindow = new Form1();
        public Form2 BWindow = new Form2();
        public JokleBokle()
          {
           }
        public void Main()
        {
            BWindow.ShowDialog();
        }
 
        static public void FOVR()
        {
            MessageBox.Show("This is FOVR");
            JokleBokle ssee = new JokleBokle();
            ssee.PPO();
        }
 
        public void PPO()
        {
            MessageBox.Show("Working - This is PPO");
        }
    }
}