Tesseract не могу найти ошибку

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Emgu;
using Emgu.CV;
using Emgu.CV.Util;
using Emgu.CV.OCR;
using Emgu.CV.Structure;
using Emgu.CV.XFeatures2D;
 
 
namespace WindowsFormsApp1
{
    public partial class Form1 : Form
    {
        private string filegid = @"C:\test";
        private string lang = "rus";
        public Form1()
        {
            InitializeComponent();
        }
 
        private void richTextBox1_TextChanged(object sender, EventArgs e)
        {
 
        }
 
        private void button1_Click(object sender, EventArgs e)
        {
            Tesseract tesseract = new Tesseract(filegid, lang, OcrEngineMode.TesseractLstmCombined);
            tesseract.SetImage(new Image<Bgr, byte>(@"C:\Users\young\Desktop\321.png")); 
            tesseract.Recognize();
            richTextBox1.Text = tesseract.GetUTF8Text();
            tesseract.Dispose();
        }
    }
}