The Search Console is not fetching sitemap URLs which is autogenerated with Ghost.
It has been more than a week since the error is reflecting.
Need immediate assistance on this as it will impact crawling.
Hey there 
Please don’t repost the same question; if you want to add more details, you can either edit your original post, or add an additional reply to it 
I’m going to close this as a duplicate of Google search console can’t find any url from sitemap