Sitemap.xml couldn’t be fetched in Google Search Console

Hi everyone,
I found the similar posts here but I still want to ask more.
I added my sitemap, https://minsoehan-msh.web.app/sitemap.xml to google search console. but the sitemap.xml is still couldn’t fetched. It has already been 3-4 days I waited. Some post online suggests that xml file’s format. the format google accepts is started with the line:
help me

Could you, in your layouts folder, create sitemap.xml file and paste into it this code from sitemap template

{{ printf "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>" | safeHTML }}
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
  xmlns:xhtml="http://www.w3.org/1999/xhtml">
  {{ range where .Pages "Sitemap.Disable" "ne" true }}
    {{- if .Permalink -}}
  <url>
    <loc>{{ .Permalink }}</loc>{{ if not .Lastmod.IsZero }}
    <lastmod>{{ safeHTML ( .Lastmod.Format "2006-01-02T15:04:05-07:00" ) }}</lastmod>{{ end }}{{ with .Sitemap.ChangeFreq }}
    <changefreq>{{ . }}</changefreq>{{ end }}{{ if ge .Sitemap.Priority 0.0 }}
    <priority>{{ .Sitemap.Priority }}</priority>{{ end }}{{ if .IsTranslated }}{{ range .Translations }}
    <xhtml:link
                rel="alternate"
                hreflang="{{ .Language.LanguageCode }}"
                href="{{ .Permalink }}"
                />{{ end }}
    <xhtml:link
                rel="alternate"
                hreflang="{{ .Language.LanguageCode }}"
                href="{{ .Permalink }}"
                />{{ end }}
  </url>
    {{- end -}}
  {{ end }}
</urlset>

Generate your site again and let know when done.

Also, not sure what layout/theme you using. It may contain its own Sitemap.xml template. Worth checking it with it, as what I checked, the generate sitemap.xml is not the default generated by Hugo when there is no template specified.