WP Grim

Thank you very much @oliverpw

Thank you @sbbdtctv

Thank you @john-cahill

Hello @sunlight1976

Plugin writes <lastmod> from wp_posts.post_modified and formats it with gmdate. If a page has post_modified = ‘0000-00-00 00:00:00’, common when a page is created programmatically or imported without setting modified dates, strtotime() returns a negative timestamp and gmdate() produces -0001-11-30T00:00:00+00 (line 0), which Google flags as “Data non valida” on the <lastmod> tag. Your /my-bookings/ entry likely has that invalid modified date in the database, so the sitemap entry inherits it. Please edit and re-save the “My Bookings” page and it should resolve the problem.

Please let us know if it doesn’t help.

Best regards

@winglouie Sure. We will try to implement current site URL into Cached Data in order to exclude caches from other sites like staging, local. Thank you for your clarification.

Best regards

Hello @markusdesign

We will check this issue asap and implement the fix. Thank you for using our plugin.

Best regards

wp-content\plugins\xml-sitemap-generator-for-google\includes\Frontend.php Line:118 is calling Settings class object, but we are not mentioning media_sitemap anywhere in our plugin. This property has been removed. Please re-save your sitemap settings and compare below files with your website plugin files:

• wp-content/plugins/xml-sitemap-generator-for-google/includes/vendor/Settings.php
• wp-content/plugins/xml-sitemap-generator-for-google/includes/vendor/PTSettings.php

Please let me know if re-saving doesn’t resolve the issue and you cannot find any differences in above files.

Hello @winglouie

Could you please help us with debugging this issue? We need to clarify structure and content of sitemap URLs.

1. Please enable the option to “Disable Media Sitemap Cache Collection” under Settings > XML Sitemaps > Advanced tab.
2. Please add below code for outputting Sitemap URLs in /plugins/xml-sitemap-generator-for-google/trunk/includes/Sitemap.php file, line 62 (https://plugins.trac.ww.wp.xz.cn/browser/xml-sitemap-generator-for-google/trunk/includes/Sitemap.php#L62):
   
   echo ‘<pre>’;
   print_r( $this->urls );
   echo ‘</pre>’;
   die();

After adding this code, you are able to see URLs array content on your Image Sitemap page. Correct structure should be like this:

Array
(
    [0] => Array
        (
            [0] => https://example.com/sample-page/
            [1] => Array
                (
                    [0] => https://example.com/wp-content/uploads/2025/05/website.jpg
                )

        )

    [1] => Array
        (
            [0] => https://example.com/hello-world/
            [1] => Array
                (
                    [0] => https://example.com/wp-content/uploads/2025/05/website.jpg
                )

        )

)

You can see the associative array in “0” item instead of URL string. Please send me this example or the whole structure from starting, only with 1 URL item. It may help us to debug this issue.

Please remove above code snippet after finishing the debug.

Also, if disabling Media Sitemap Cache Collection resolves this issue, please try to enable it back in order to check the Sitemap one more time.

Thank you for your help.

Best regards