The first thing that you need to do when you come across an HTTP 500 Error (https://datarecovee.com/http-error-500/) would be to refresh the page because it could be a glitch. When that does not work clear your browser of its cookies and cache. Subsequently, attempt to visit the site using a third browser or computer to verify that the 500 Server Error is not a one-off event and is shared by other computers and browsers, which will aid in identifying the problem.