Oracle Developer Tools for Visual Studio

 I am trying to call an Oracle stored procedure and getting "Sequence contains no elements".
I changed it to firstordefault as many posts say but still get the same error. I changed the stored procedure to be as simple as possible just to see if I can get any results but I am unable to.

CREATE OR REPLACE 
 PROCEDURE get_registration
   (returnRecords Out SYS_REFCURSOR)
   IS

BEGIN
     open returnRecords for
     Select Admin_Comments
     from registration
     order by ID desc;
 END; -- Procedure
 /



using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Oracle.ManagedDataAccess.Client;
using Oracle.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore;
using SDD_Training.DataAccess.Repository.IRepository;
using SDD_Training.Models;

 public int GetorCreateRegistration(Registration id)
    {
        if (id != null)
        {
         OracleParameter pout = new OracleParameter("returnRecords", 
         OracleDbType.RefCursor, ParameterDirection.Output);
         object[] parameters = new object[] { pout };

         var results = _db.RESULTS.FromSqlRaw("BEGIN get_registration(:returnRecords); END;", new object[] { parameters }).FirstOrDefault();