Non-nullable property 'Filename' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'Title' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'Artist' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'Album' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'Year' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'Track' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'TrackTotal' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'AlbumArtist' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'Genre' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.