Hi Dan,
When checking your post-sitemap6.xml, we got an HTTP ERROR 500, which suggests the error is on the side.
Are you using the latest version of Yoast SEO? We ask as there is a known issue which we’ve recently found where some of the sitemaps would return a 500 error code.
If that is the case, a temporary workaround would be to edit the /wordpress-seo-premium/inc/sitemaps/class-sitemap-image-parser.php file and replace the 239 line to this return array_unique( $attachments, SORT_REGULAR );. In general, it is not recommended to modify the core plugin files, as this issue will be fixed in the next plugin update, but this could be a temporary workaround.
New update today – 6.1. Do you think it solves this?
Thank you !
The issue related to XML sitemaps generation that was previously referenced has been resolved in the release of version 6.1.1. Can you please try updating and checking whether this resolves your issue?
Ok, thanks. Will check asap.
NEw and updated version:
https://www.computerblog.ro/post-sitemap6.xml
HTTP ERROR 500
General HTTP error: 404 not found
HTTP Error: 404
Version 6.2 – same 404 error on same page 🙁