Fixed Divi theme – The site is experiencing technical difficulties

After a Divi theme update, one of my sites started breaking when displaying the shop page. The error I was seeing on the front end said…

“The site is experiencing technical difficulties’

No other error information was available in the WordPress dashboard.

Switching wp_debug to ‘true’ in wp-config.php revealed that I had a call to undefined method ET_Core_Cache_File::set_cache_data() in /Divi/includes/builder/core.php.

I fixed the issue by finding the /wp-content/cache/ folder and deleting it.

Switch your wp-config.php file to wp_debug ‘true’ to see this error