Warning

How do I remove this Warning:
Warning: Missing argument 2 for wpdb::prepare(), called in /homepages/40/d195330019/htdocs/dnoray/grand/wp-content/plugins/gift-certificates-lite/gift-certificates-lite.php on line 892 and defined in /homepages/40/d195330019/htdocs/dnoray/grand/wp-includes/wp-db.php on line 1210

I’m currently developing at https://dnoray.com/grand/gift-certificate/?preview=true&preview_id=3412&preview_nonce=967eac0f4a

https://www.ads-software.com/plugins/gift-certificates-lite/