sitemap is blank

@yosky `The source code for the sitemap is empty. This typically means your site has a static file on the server or there’s a conflict with a plugin or theme. Please remove any static sitemap files as Yoast SEO does not create a physical file on your server.
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If you do not find any static sitemap files, this may be a plugin or theme conflict. Please disable all plugins except Yoast SEO, and use one of the default (Twenty*) themes. If the problem goes away, enable plugins one by one to identify the source of your troubles.
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If you can install plugins, the <a href=”https://wordpress.org/plugins/health-check/&#8221; rel=”noopener noreferrer” target=”_blank”>Health Check & Troubleshooting</a> plugin offers a troubleshooting mode that will disable all plugins and change the theme for you, while you’re still logged in, <strong>without affecting normal visitors to your site</strong>. Once in the troubleshooting mode, please activate <strong>only</strong> Yoast SEO and attempt to reproduce the issue you described.
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If you are unfamiliar with checking for conflicts, we’d like to point you to a step-by-step guide that will walk you through the process: <a href=”https://yoast.com/help/how-to-check-for-plugin-conflicts/#utm_source=support&utm_medium=forum&utm_campaign=support-link”>How to check for plugin conflicts</a>`

It looks that WordPress/Site URLs still points to http:// (non-secure) version. Sitemaps will be rendered into browser only if you access them via https://pattygajaschi.com/sitemap_index.xml

If you use Divi theme then you should disable/enable sitemaps after changing WP/Site URLs or similar options (forcing SSL,…).

I’ll try to quickly answer in couple tips:

• Make sure that both WordPress and Site URLs point to correct secure URLs – https://wordpress.org/support/article/changing-the-site-url/
• Purge all cache which you have installed (I see LiteSpeed cache, but maybe there is other caching)
• Divi themes/builder force deprecated Yoast’s sitemap cache (into transients – disabled by default into Yoast) – https://yoast.com/help/sitemap-does-not-update/:
  

  Please disable the sitemap feature, clear cache, and enable the sitemap feature to force the sitemap to rebuild.

The fastest way is to add them into .htaccess (Litespeed works on same way as apache). You can check with your host if there are some tool on control panel or you can use some plugin (eg. Redirection) or you can buy Yoast SEO premium.