FileUpload Image with morphOne relationship

Class EntityImage extends Model {
  protected $table = 'images';
  
  protected static $storageBucket = 'entities';

  protected static $sizes = array('800x600', '500x400', '200x150');
  protected static $resize_method = 'resize';

  public function __construct()
  {

  }

  public function imageable(): MorphTo
  {
     return $this->morphTo();
  }

  public function getUrlAttribute()
  {
    return Storage::url('uploads/' . $this->bucket . '/' . $this->filename);
  }
}

class ProgramLogo extends EntityImage {

    protected static $storageBucket = 'programs';
    protected static $sizes = array('800x800', '400x400', '128x128', '64x64', '32x32', '16x16');

}

class ProgramOperator extends Model
{
    use SoftDeletes;

    public $timestamps = true;

    protected $table = 'program_operators';

    protected $fillable = array('name', 'is_active', 'mascot_name', 'color1_name', 'color2_name', 'color3_name', 'song_name',                                       'song_theme', 'song_lyrics');
    public function entity()
    {
        return $this->morphTo();
    }

   public function image()
   {
       return $this->morphOne(ProgramLogo::class, 'imageable');
   }

}