Site map error

Good day my great developer,

I got a new error message on my Google Search Console which says ”
Submitted URL marked ‘noindex’
“. I have removed noindex tag from 3 of the affected 4 pages, the 1 left is sitemap.xml page.

I went through setting and unmark “Include sitemap in HTML format”, but if you visit https://naijadiamond.com.ng/sitemap.html/, you will find out that the URL is accessible.

Any help will be appreciated.

The site I need help with: https://naijadiamond.com.ng/

The page I need help with: [log in to see the link]