I have one website in wordpress and updated the Yoast Plugin on it, as i activated the sitemap, its format was totally changed.
The Site-map is looking like this when I typed the URL, the formatting was totally changed:
www.abc.com/sitemap_index.xml
http://www.abc.com/page-sitemap.xml 2016-09-26T08:33:40+00:00 http://www.abc.com/video-sitemap.xml 2016-10-16T08:57:21+00:00 http://www.abc.com/categories-sitemap.xml 2016-10-16T08:57:21+00:00 http://www.abc.com/video_tag-sitemap.xml 2016-10-16T08:57:21+00:00 http://www.abc.com/author-sitemap.xml 2016-07-21T10:45:20+00:00