Sitemap XML Critical error WordPress

Errors like this are logged. Check the error log on your server. If you can’t find the log, please contact your host.

Meantime, enable wp_debug and wp_debug_log and after an error, look at wp-content/debug.log to see if anything gets logged there. https://www.ads-software.com/support/article/debugging-in-wordpress/

You can also try this: Please attempt to disable all plugins, and use one of the default (Twenty*) themes. If the problem goes away, enable them one by one to identify the source of your troubles.

If you cannot access wp-admin, there are other ways to deactivate plugins:? https://www.ads-software.com/support/article/faq-troubleshooting/#how-to-deactivate-all-plugins-when-not-able-to-access-the-administrative-menus

There is an error which is due to rank math seo plugin in php file on line 122 can you help with that one??

below is the link for image of error in line of php from wp-content

https://ibb.co/x170c0n

I recommend asking at https://www.ads-software.com/support/plugin/seo-by-rank-math/#new-post so the plugin’s developers and support community can help you with this.