If you get this error when installing a Content Template: Fatal error: Class 'FilesystemIterator' not found in /home/opclub/public_html/wp-content/plugins/optimizePressPlugin/lib/admin/inc/content_layouts.php on line...
NOTE: The plugin “Global Content Blocks” seems to no longer be supported. We would suggest using this plugin instead: https://wordpress.org/plugins/insert-html-snippet/....