Data is Null. This method or property cannot be called on Null values

Question

I\'m working on an application where one can get information on movies from a database as well as add, update and delete the movies. In the database I have three tables (Movie,

Answer 1

In my case I was using EF Core and the issue was that the field was nullable in the database but in the ModelCreating it was required like that:

protected override void OnModelCreating(ModelBuilder modelBuilder)
{
   modelBuilder.Entity(entity =>
   {
      entity.Property(e => e.Details)
                    .IsRequired()
                    .HasMaxLength(250);
   }
}

I remove the IsRequired() and it worked fine.

Update few days after, Got same issue, a string field It was not allowing null in the DB.