Fatal error: Uncaught Error: Interface "FSVendor\WPDesk\PluginBuilder\Plugin\Hookable" not found in /home/samipe/public_html/wp-content/plugins/flexible-shipping/classes/tracker/class-wpdesk-flexible-shipping-tracker.php:15 Stack trace: #0 {main} thrown in /home/samipe/public_html/wp-content/plugins/flexible-shipping/classes/tracker/class-wpdesk-flexible-shipping-tracker.php on line 15