Failed to read sitemap file

I guess you have already read the Google Search Console documentation, but make sure that the URL is accessible and that it is not blocked by your robots.txt.

Best regards.

The URL doesn’t blocked by robots.txt

Can you share the URL?

Best regards.

Of course
https://3d-kstudio.com/sitemap-image.xml/

That URL works correctly, but https://3d-kstudio.com/sitemap-image-1.xml or https://3d-kstudio.com/sitemap-image-2.xml doesn’t and return error 404 instead of the sitemap.

Try to flush your permalinks.

Best regards.

Flushing permalinks didn’t help
xml from your other plugin works as expected
https://3d-kstudio.com/sitemap-video.xml

Very strange – now all tools ( google url check and xml-sitemaps site) show that all URLs (sitemap-image.xml, sitemap-image-1.xml and sitemap-image-2.xml) are valid. But I still see the message “Failed to read sitemap file“

Are you using the latest versions of the plugins? That video sitemap isn’t the last one.

Best regards.

We don’t know what your problem is now, to be honest. Try contacting Google Search Console support and see what they tell you.

Best regards.

Are you using the latest versions of the plugins? That video sitemap isn’t the last one.

The last version of the video sitemap plugin causes high CPU load

Not the latest version, try it.

The version you are using generates a sitemap that is no longer valid.

Best regards.

I don’t use the latest version, because the latest version causes high CPU load