must be a non-abstract type with a public parameterless constructor .net Core

Question

I am working on .net Core 6 I have search this error but i couldn't find a solution

I have three classes and they are implement each other but while i am starting my APİ i am getting error from EfProductDal class. It saying MyDbContext must be non-abstract type with a public parameterless constructor.

-base abstract class

 public class EfEntityRepositoryBase<TEntity, TContext> 
        : IEntityRepository<TEntity>
     where TEntity : class, IEntity, new()
     where TContext : DbContext, new()
    {
        public void Add(TEntity entity)
        {
            using (var context = new TContext())
            {
                var addedEntity = context.Entry(entity);
                addedEntity.State = EntityState.Added;
                context.SaveChanges();
            }
        }
  }

-IEntityRepository

 public interface IEntityRepository<T> where T : class, IEntity, new()
    {
        T Get(Expression<Func<T, bool>> filter);
        IList<T> GetList(Expression<Func<T, bool>> filter = null);
        void Add(T entity);
        void Update(T entity);
        void Delete(T entity);
    }

-EfProductDal

public class EfProductDal : EfEntityRepositoryBase<Product, MyDbContext>, IProductDal
    {

    }

MydbContext:

public class MyDbContext:DbContext
    {
        public MyDbContext(DbContextOptions<MyDbContext> options) : base(options) { }          
        public DbSet<Shipment> Shipments { get; set; }
        public DbSet<Product> Products { get; set; }
   }

Please, correct me, if something wrong. Kind Regards...

Answer 1

where TContext: DbContext, new() says that TContext must have a default c'tor. But MyDbContext does not.