critical erroro on the website

if we activate your plug in we get this critical error, here you have the debug:

Fatal error: Uncaught Error: Call to a member function get_catalog_visibility() on bool in /var/www/vhosts/itesoridelcontadino.com/httpdocs/wp-content/plugins/woocommerce-notification/frontend/notify.php:720 Stack trace: #0 /var/www/vhosts/itesoridelcontadino.com/httpdocs/wp-content/plugins/woocommerce-notification/frontend/notify.php(1419): VI_WNOTIFICATION_Frontend_Notify->get_product() #1 /var/www/vhosts/itesoridelcontadino.com/httpdocs/wp-includes/class-wp-hook.php(303): VI_WNOTIFICATION_Frontend_Notify->init_scripts(”) #2 /var/www/vhosts/itesoridelcontadino.com/httpdocs/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters(NULL, Array) #3 /var/www/vhosts/itesoridelcontadino.com/httpdocs/wp-includes/plugin.php(470): WP_Hook->do_action(Array) #4 /var/www/vhosts/itesoridelcontadino.com/httpdocs/wp-includes/script-loader.php(2083): do_action(‘wp_enqueue_scri…’) #5 /var/www/vhosts/itesoridelcontadino.com/httpdocs/wp-includes/class-wp-hook.php(303): wp_enqueue_scripts(”) #6 /var/www/vhosts/itesoridelcontadino.com/ in /var/www/vhosts/itesoridelcontadino.com/httpdocs/wp-content/plugins/woocommerce-notification/frontend/notify.php on line 720