error message

hi, a i have de next message:

Warning: file_get_contents(): https:// wrapper is disabled in the server configuration by allow_url_fopen=0 in /usr/home/estanco37.com/web/wp-content/plugins/yith-woocommerce-catalog-mode/plugin-fw/lib/promo/yith-promo.php on line 33 Warning: file_get_contents(https://www.estanco37.com/wp-content/plugins/yith-woocommerce-catalog-mode/plugin-fw/lib/promo/yith-promo.xml): failed to open stream: no suitable wrapper could be found in /usr/home/estanco37.com/web/wp-content/plugins/yith-woocommerce-catalog-mode/plugin-fw/lib/promo/yith-promo.php on line 33

Thanks