Error

Fatal error: Cannot use object of type WP_Error as array in /srv/disk8/1965793/www/blessing.makwel.com/wp-content/plugins/dhl-woocommerce-shipping-method/includes/class-wf-dhl-woocommerce-shipping.php on line 340

getting error

http://blessing.makwel.com/index.php/checkout/

https://ww.wp.xz.cn/plugins/dhl-woocommerce-shipping-method/