An error occurred during the compilation of a resource required to service this request / Models

Hi, I made some changes to this table in my database and now I'm having problems with my data model. Trying to get my data I got the following error. I understand that the error is in data model, now I must change it to be similar to my new table. From this I have come up with a series of questions regarding the data model. They are the following:

• Should my model contain the data equivalent that rows in my Sql table?
• Can I use less data in my model?
• What is the correct data type to reference a varbinary in my model?

Here I leave my previous data model and if you could recommend me some changes to make this work, it would be great. Thank you very much: D

using System.ComponentModel.DataAnnotations;

namespace PCotiza_compras.Models {
  public class Requests {
    public int Id {
      get;
      set;
    }
    public string Wiw {
      get;
      set;
    }


    [Display(Name = "Proyecto")]
    public string Project {
      get;
      set;
    }

    [Display(Name = "Esquema")]
    public int schemeid {
      get;
      set;
    }

    [Display(Name = "Fecha")]
    public string Date {
      get;
      set;
    }

    [Display(Name = "Estado")]
    public string status {
      get;
      set;
    }

    [Display(Name = "Días de expiración")]
    public int ExpirationDays {
      get;
      set;
    }

    [Display(Name = "Comentarios")]
    public string Comments {
      get;
      set;
    }

    [Display(Name = "Departamento")]
    public int DepartmentId {
      get;
      set;
    }

    [Display(Name = "Categoría")]
    public int CategoryId {
      get;
      set;
    }
  }
}