Error

I’m getting no links shown, and this error:
Warning: Missing argument 2 for wpdb::prepare(), called in [path to]/plugins/internal-link-checker/internal-links.php on line 239 and defined in [path to]/wp-includes/wp-db.php on line 1147.

https://ww.wp.xz.cn/plugins/internal-link-checker/

UPDATE: with the version on GitHub (rather than through the WP dashboard), the error is absent but it still shows no links.