Last modification data not showing up in sitemap????

[bossyman15]

i have Last modification setting set to sever response but when i look at xml file, its not there. It worked before but not now.

What went wrong?

[XML-Sitemaps Support]

Hello,

what is your sitemap URL and example link that doesn't have correct lat mod time attached?

[bossyman15]

Hello,

what is your sitemap URL and example link that doesn't have correct lat mod time attached?

www.bossyman15.com/sitemap.xml

all pages do not have last mod time none at all.

[XML-Sitemaps Support]

Hello,

your server does not return last modification http header, hence it's not detected:
https://www.xml-sitemaps.com/http-headers-viewer.html?op=http-headers-viewer&go=1&pageurl=http%3A%2F%2Fwww.bossyman15.com%2Fproject.html&se=xmlsitemaps&submit=View