Fatal error: Uncaught Error: Call to undefined function plugin_dir_path() in /home/handllu1/public_html/redboys/plugins/simple-membership/ipn/swpm_handle_subsc_ipn.php:6 Stack trace: #0 {main} thrown in /home/handllu1/public_html/redboys/plugins/simple-membership/ipn/swpm_handle_subsc_ipn.php on line 6