Bummer! Did you remove or change the Issue class?

using System.ComponentModel.DataAnnotations;

namespace IssueReporter.Models
{
    public class Issue
    {
        public enum SeverityLevel
        {
            Minor,
            Major,
            Critical
        }

        public int Id { get; set; }
        public string Name { get; set; }
        public string Email { get; set; }
        [Required]
        [Display(Name = "Department")]
        public int DepartmentId { get; set; }
        public Department Department { get; set; }
        public SeverityLevel Severity { get; set; }
        public bool Reproducible { get; set; }
        [Required]
        [Display(Name = "Description of Problem")]
        public string DescriptionOfProblem { get; set; }
    }
}