Fatal error: Uncaught Error: Interface 'SimplePie\Cache\Base' not found in /services/http/users/r/rccohen/wp-includes/SimplePie/src/Cache/Memcache.php:63 Stack trace: #0 {main} thrown in /services/http/users/r/rccohen/wp-includes/SimplePie/src/Cache/Memcache.php on line 63