@bestforbride We understand that you are receiving an error of ‘There has been a critical error on your website’ on the https://www.bestforbride.com/bridal-shop/post-sitemap.xml URL. This is a generic error from WordPress, and when this occurs a more detailed error message is then sent to the admin email for WordPress. Can you please check for this email and let us know the detailed error information that WordPress logged?
Common causes of this error on a sitemap are a conflict with another plugin/theme, or that the max_execution_time or memory_limit for PHP is being exceeded. This setting is typically controlled by editing the values in a php.ini file. If you aren’t sure how to change these settings in php.ini, we would recommend contacting your hosting provider for additional assistance.
Also, if the issue is due to the amount of resources required to generate the sitemap, you can reduce the amount necessary to generate the sitemap by reducing the number of entries in the sitemap. By default, the number of entries in the sitemap is set to 1000 but by decreasing this value it will decrease the amount of resources required to generate the sitemap.
To decrease the number of sitemap entries you can use the filter wpseo_sitemap_entries_per_page. We have more information on using this developer filter at the following link: https://yoast.com/help/xml-sitemaps-in-the-wordpress-seo-plugin/#limit
