Non-nullable field '_gameController' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the field as nullable.

Non-nullable field '_spriteBatch' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the field as nullable.

Non-nullable field '_gameController' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the field as nullable.