Hi, the following site is hosted on wordpress.com
and on updating the xpro theme the site went down with the following error
There has been a critical error on this website.
On talking to the hosting engineers the following error is being reported
[27-Jan-2022 16:06:48 UTC] PHP Fatal error: Cannot declare class Cornerstone_Shortcode_Preserver, because the name is already in use in /srv/htdocs/wp-content/themes/pro/cornerstone/includes/classes/classic/utility/class-shortcode-preserver.php on line 8
When changing the template to anything other than xpro the error is resolved suggesting the theme is at fault. The wordperss version is Current version: 5.9.
All plugins have been deactivated and turned back on etc. With all plugins disabled, the critical error continued to occur.
This is a live corporate site so I am urgently trying to resolve this.