Need to fix an issue

It’s cool little plugin but generates the following error message:

Notice: Undefined variable: order in /var/www/html/wordpress/wp-content/plugins/photo-gallery-awesome-responsive-image-gallery/awesome-photo-gallery.php on line 403

Notice: Undefined variable: order in /var/www/html/wordpress/wp-content/plugins/photo-gallery-awesome-responsive-image-gallery/awesome-photo-gallery.php on line 407

Notice: Undefined variable: orderby in /var/www/html/wordpress/wp-content/plugins/photo-gallery-awesome-responsive-image-gallery/awesome-photo-gallery.php on line 407

I checked the code and there’s no option to define order and order by but the variables are still being used in the loop. Fixing it can boost the active installs. All the best. ??