Google Search Console Server error (5xx)

Thanks for reaching out.

The wordfence_lh URL’s should not be indexed, as they typically are just hits that Wordfence will detect as Human Traffic to the site. It’s possible that your website does not serve the wordfence_lh link correctly. It should be serving an empty page. However, sometimes themes use the WordPress template redirect hook incorrectly which results in all requests with a query string end up serving the full contents of the page. This would cause Google to think there is a full copy of your page under that URL. Since yours results in the blank page, you need to adjust the Google Search Console to filter out those results. They in no way affect your SEO ranking.

Tim