I received the following error after attempting to update my WordPress to the latest version Fatal error: Call to undefined function wp_cache_get() in /home/fairmftt/public_html/wp-includes/option.php on line 1117
After going through the support forum I deactivated my plugins but this made the problem worse - I now get that error if I go directly to that website. Also, when I log into WordPress (not the dashboard) I can't do anything to the page including updating the error. All the plugins have disappeared, and I can't seem to find anyone else with a similar problem.
Thank you for your help.