Why is EF core not receiving data?

Question

C++ / C#

Here are the models:

[Table("Accounts")]
public class Account
{
  [Key]
  public int Id { get; set; }
  public string Name { get; set; }
  public string Login { get; set; }
  public List<Element> Elements { get; set; }
}

[Table("Elements")]
public class Element
{
  [Key]
  public int Id { get; set; }
  public int AccountId { get; set; }
  public Account Account { get; set; }
  public string Name { get; set; }
}

When writing, everything is OK, the table is created and everything is added there.
But when fetching, the references are null.

var testAcc = dba.Data.Where(a => a.Login == "Test").Include(a => a.Elements).ToList().First();

Logger output:

As a result, it turned out that Include is in two namespaces .. and the wrong one was connected ..
needed - using Microsoft.EntityFrameworkCore;