Fatal error: Uncaught Error: Cannot access self:: when no class scope is active in /home/silvermm/public_html/wp-content/plugins/prdctfltr/lib/deprecated-instock.php:7 Stack trace: #0 {main} thrown in /home/silvermm/public_html/wp-content/plugins/prdctfltr/lib/deprecated-instock.php on line 7