WordPress reporting errors and Templates behaving strangely

Hi

We’ve had an issue with some of our site pages after updating to 13.2 and now templates reuse to attach themselves to older pages, categories, etc. As soon as we log into WordPress it also raises a security issue with the server and the firewall kicks in every few minutes.

Here is the report from WordPress
WordPress version 5.8.2 Current theme: Newspaper (version 11.3.2) Current plugin: (version ) PHP version 7.4.26 Error Details ============= An error of type E_COMPILE_ERROR was caused in line 35 of the file /home/medizepv/public_html/wp-content/plugins/td-composer/legacy/common/common.php. Error message: require_once(): Failed opening required ‘/home/medizepv/public_html/wp-content/plugins/td-composer/legacy/common/wp_booster/td_metabox_generator.php’ (include_path=’.:/opt/alt/php74/usr/share/pear’)
The website is https://medika.life. The normal page appears like this, https://medika.life/category/diseases/ whilst the same template shows up like this on another category section, https://medika.life/category/general-health/, note the sudden purple background.

Changing the templates in Theme settings for Categories has no effect?? Please help as this appears to be spreading through the site, we’ve also noticed pages suddenly losing their assigned templates to revert to the default one.