Once you've run a crawl of your site in the Site Audit tool, you might see a '5XX page' error in the report under the Internal pages menu:

This error indicates the URLs that return one of the 5XX HTTP status codes and cannot be accessed due to a Server Error (that occurs when the server is not able to fulfill the request).

It can also be a temporary issue if Ahrefs crawler was not able to access the requested page during the crawl.

Click here for the full list of 5XX Server errors.

Why is it important for SEO? 

This can damage your website crawlability (and thus indexability) and have a negative impact on the user experience for your website visitors.

How to fix it

The most common reason for these errors is an internal server error or a server busy error when the web server failed to fulfill the request due to an unexpected condition. Such temporal issues do not require any extra work and, as a rule, get resolved with the next successful crawl.

Your server may be overloaded or misconfigured. If this is an ongoing problem, you might need to check with your hosting provider or with your web developers.

One of the possible reasons for this issue in Site Audit tool is a high crawling speed set in your project's settings. Some servers are not able to process a huge number of requests at a given time. In this case, to fix it you need to try to set a lower crawling speed and run a project re-crawl.

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