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