Automapper missing type map configuration or unsupported mapping - Error

Question

Entity Model

public partial class Categoies
{
    public Categoies()
    {
        this.Posts = new HashSet();
    }

    public int Id { get; se         


        

Answer 1

I did this to remove the error:

Mapper.CreateMap();
prospect = Mapper.Map(prospectFromDb, prospect);