Warning: require_once(PEAR.php): Failed to open stream: No such file or directory in /var/www/html/Media_Xtract/Serializer.php on line 53

Fatal error: Uncaught Error: Failed opening required 'PEAR.php' (include_path='.:/usr/share/php') in /var/www/html/Media_Xtract/Serializer.php:53 Stack trace: #0 {main} thrown in /var/www/html/Media_Xtract/Serializer.php on line 53