not able to get XML Sitemap

Author kindly help me

Same problem. help

what the fuck, same https://hiphopandrnb.com/post-sitemap.xml

Any solution to this?
https://www.addictionclinicnetwork.com/sitemap_index.xml
m4tl4s i notice yours is fixed. Help

These types of messages refer to whitespace somewhere in one of the files of your website. Your theme or one or more of your plugins are outputting whitespace, causing this issue. The added whitespace might be from any plugin or functions.php file that has a space outside of <?php … ?>. Often, it is an extra space, outside the tags, in a functions.php file or other recently edited file.

~ Kim ~
Support at Yoast