sitemap in google search console says "Couldn't fetch"

[CodingReaper1]

Link to the code that reproduces this issue

https://github.com/CodingReaper1/TheWildOasisAdminNextJs

To Reproduce

you don't need to reproduce I think

Current vs. Expected behavior

So I have created dynamic sitemap in nextjs which you can isee in my github repo in app folder problem is no matter what I can't successfully register sitemap on google search console.

I have seen discussion about this in github already #51649 however it said that I should create new issue.

I have tried everything shown in that github discussion

I went here www.xml-sitemaps.com/validate-xml-sitemap.html to test sitemap no issues there

I tried adding forward / or search queries in case request was cached

I do have middleware I have page "/sitemap.xlm" in public routes then I tried completly disabling middleware on sitemap page but that didn't work either I have no idea what to do.

Provide environment information

operating system: windows 10
nextjs: 14
react: 18
you can see all packages in repo
live app if that helps somehow: the-wild-oasis-admin-nextjs.vercel.app

Which area(s) are affected? (Select all that apply)

Metadata

Which stage(s) are affected? (Select all that apply)

Vercel (Deployed)

Additional context

No response