Upgrading advanced custom fields to version 3.1.8 crashed my site. Now I can't access anything backend or front end. Any ideas why and more importantly how to fix it.
The error i'm receiving is Server Error:
The website encountered an error while retrieving http://sitename/wp-admin/update.php?action=upgrade-plugin&plugin=advanced-custom-fields%2Facf.php&_wpnonce=c2bd4d8234. It may be down for maintenance or configured incorrectly.