"The woods". Read action in MVC "There is no constructor without parameters for this object."

Question

"The woods". Read action in MVC "There is no constructor without parameters for this object."

I am working on a basic MVC5 / EF6 application, and I run the following error when I try to raise the Read action in MVC:

Error 

There was an error running the selected code generator: 
'No Parameterless constructor defined for this object'

In any case, this is not necessary, because I am reading, not deleting or updating, but in the model in question there is no constructor without parameters (as for the models below).

public class Article
{
    public int ArticleID { get; set; }
    public string Title { get; set; }
    public string Content { get; set; }
    public DateTime PublishDate { get; set; }

    public virtual Author Author { get; set; }

    public Article()
    {
    }
}

My controller is below, and it also has a parameterless constructor:

public ArticleController()
{
    connection = System.Configuration.ConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString;
    context = new TRNContext(connection);
}

// GET: Article
public ActionResult Index(int id)
{
    return View(context.Articles.SingleOrDefault(a => a.ArticleID == id));
}