Error after Import

After load .xml file and select the user, these messages appear:

Notice: Undefined property: Blogger_Importer::$posts_skipped in /var/www/public/wp-content/plugins/blogger-importer/blogger-importer.php on line 404

Notice: Undefined property: Blogger_Importer::$comments_skipped in /var/www/public/wp-content/plugins/blogger-importer/blogger-importer.php on line 468

The posts was imported, but not the images. And I edit the code as described in this post: https://www.ads-software.com/support/topic/images-not-importing-5/