Failed to create lazy iterator for foreign collection member class

I have a simple master detail, when I query the master and check for a collection of foreign members, throw an exception java.lang.IllegalStateException: Could not build lazy iterator for class com.example.entity.detail

List<Master> masters = DBHelper.getMasterDao().queryForAll();

      

        
        
        
      

    

At this point, the masters are retrieved with a fine, but throws an exception when trying to access the foreign member.

Class definition

public class Master {

    public Master(){

    }

    @DatabaseField(id = true)
    public int Id;

    @DatabaseField(format = "yyyy-MM-dd'T'HH:mm:ss", dataType = DataType.DATE_STRING)
    public Date CreationDate;

    // Reverse navigation
    @ForeignCollectionField(eager = true)
    public Collection<detail> details;
}

public class Detail{

    @DatabaseField(id = true)
    public long Id;
    @DatabaseField
    public int Month;
    @DatabaseField
    public double Price;
    @DatabaseField
    public double Diff;

    @DatabaseField(canBeNull = true, foreign = true)
    public Master master;
}