Fatal error: Uncaught Error: Interface 'SimplePie\Cache\NameFilter' not found in /home/perryt8/public_html/ultimateauthor/wp-includes/SimplePie/src/Cache/CallableNameFilter.php:52
Stack trace:
#0 {main}
thrown in /home/perryt8/public_html/ultimateauthor/wp-includes/SimplePie/src/Cache/CallableNameFilter.php on line 52