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Fatal error: Uncaught Error: Call to undefined function add_filter() in /home/pac84520/public_html/wp-content/plugins/wp-lister-ebay/classes/integration/WPL_CustomUpdater.php:20 Stack trace: #0 /home/pac84520/public_html/wp-content/plugins/wp-lister-ebay/classes/integration/WPL_CustomUpdater.php(301): WPL_CustomUpdater->__construct() #1 {main} thrown in /home/pac84520/public_html/wp-content/plugins/wp-lister-ebay/classes/integration/WPL_CustomUpdater.php on line 20