Search Console has identified that your site is affected by 1 Coverage issues:

I just received the below email from Google search console but am not familiar with the error nor have I ever encountered Server error (5xx). Any help on how to solve this will be appreciated.

Coverage issues detected on workfleek.co.ke

To the owner of workfleek.co.ke:

Search Console has identified that your site is affected by 1 Coverage issues:

Top Errors

Errors can prevent your page or feature from appearing in Search results. The following errors were found on your site:

Server error (5xx)

We recommend that you fix these issues when possible to enable the best experience and coverage in Google Search.