Fatal error: Allowed memory size of 41943040 bytes exhausted (tried to allocate 12288 bytes) in /home/xdude/public_html/wp-content/plugins/wordpress-seo/inc/sitemaps/class-taxonomy-sitemap-provider.php on line 76
Fatal error: Allowed memory size of 41943040 bytes exhausted (tried to allocate 3200 bytes) in /home/xdude/public_html/website.com/wp-admin/includes/template.php on line 441
Source: https://clients.websavers.ca/whmcs/knowledgebase/211/WordPress-Yoast-SEO-plugin-blank-screen.htmlProblem Resolution
This issue is caused by a missing dependency. Yoast SEO now requires the php-bcmath library.
If you're on a shared server, you'll probably need to ask your hosting provider to install the missing library. If you're on your own virtual server or a dedicated machine you can fix the issue by installing the php-bcmath library. For example on CentOS servers you would run:
yum install php-bcmath