Ms SQL database connection xamarin

System.InvalidOperationException: 'Internal connection fatal error.'

protected override void OnAppearing()
        {
            base.OnAppearing();


            //MY SQL

            string connectionString = "Server=MYIPADRESS;Port=3306;Database=DatabaseName;Uid=admin;Pwd=password;";
            var koneksi = new MySqlConnection(connectionString);
            string queryString = " SELECT ime from drzave ";
            var cmd = new MySqlCommand(queryString, koneksi);

            koneksi.Open();
            var rd = cmd.ExecuteReader();
            users = new List<user>();
            while (rd.Read())
            {
                users.Add(new user
                {
                    Osoba = rd.IsDBNull(rd.GetOrdinal("ime")) ? string.Empty : rd.GetString(rd.GetOrdinal("ime")),
                }
                    );
            }
            rd.Close();
            listview_users.ItemsSource = users;
            koneksi.Close();
        }

<pre> protected override void OnAppearing()
        {
            base.OnAppearing();
           
            string connectionString = "Data Source=MYIPADRESS,1433;Initial Catalog=DatabaseName;User ID=admin;Password=password;";

            string queryString = "SELECT ime FROM dbo.drzave";
            SqlConnection koneksi = new SqlConnection(connectionString);
            SqlCommand cmd = new SqlCommand(queryString, koneksi);

            koneksi.Open();
            var rd = cmd.ExecuteReader();
            users = new List<user>();
            while (rd.Read())
            {
                users.Add(new user
                {
                    Osoba = rd.IsDBNull(rd.GetOrdinal("ime")) ? string.Empty : rd.GetString(rd.GetOrdinal("ime")),
                }
                            );
            }
            rd.Close();
            listview_users.ItemsSource = users;
            koneksi.Close();

        }