The following file(s) is/are blocking your XML sitemaps from working properly:
/PATH_TO_FILE/name.xml
Either delete them (this can be done with the "Fix it" button) or disable Yoast SEO XML sitemaps.
The Problem
Our sitemaps are created dynamically. If you have a physical sitemap file on your server, it may conflict with our sitemap function.
The Solution
If you want to use our sitemap function, please delete the physical file located at the path in the error message. You can automatically delete the file by clicking the 「Fix it」 button or manually through FTP or a file manager. If you are unsure how to delete files on your server, please contact your webhost.
Alternatively, you can disable our sitemap function and use the physical sitemap created through your preferred method.