Why my sitemap.xml is on error status on searchConsole

im using nodejs sitemap library for building my sitmaps.xml.

Every thing is woking well on my code and

Here is my sitemapIndex
Exemple of site map

But unfortunately on searchconsole since 2 February i have an Error.

Bad namespace

=> The namespace is incorrectly specified in your index file or sitemap.

So can any one help me?

Solution

Have you tried removing xmlns attribute from both loc and lastmod tags? For example on your XML sitemap index:

<?xml version="1.0" encoding="UTF-8"?>
<sitemapindex
    xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
    <sitemap>
        <loc>https://sitemap.tmaps.tn/statics.xml</loc>
        <lastmod>2023-03-16</lastmod>
    </sitemap>
    <sitemap>
        <loc>https://sitemap.tmaps.tn/address/1</loc>
        <lastmod>2023-03-16</lastmod>
    </sitemap>
    <sitemap>
        <loc>https://sitemap.tmaps.tn/address/ara/1</loc>
        <lastmod>2023-03-16</lastmod>
    </sitemap>
    <sitemap>
        <loc>https://sitemap.tmaps.tn/address/2</loc>
        <lastmod>2023-03-16</lastmod>
    </sitemap>
    <sitemap>
        <loc>https://sitemap.tmaps.tn/address/ara/2</loc>
        <lastmod>2023-03-16</lastmod>
    </sitemap>
    <sitemap>
        <loc>https://sitemap.tmaps.tn/address/3</loc>
        <lastmod>2023-03-16</lastmod>
    </sitemap>
    <sitemap>
        <loc>https://sitemap.tmaps.tn/address/ara/3</loc>
        <lastmod>2023-03-16</lastmod>
    </sitemap>
</sitemapindex>