Start clearing your browser cache. Unless the page that displays an error of 500 is cached, the browser should request a version of the page after clearing the cache. Then, come back. Until then, the web developer could fix the server problem.How to Fix the 500 Internal Server Error
1. Try Reloading the Page …
2. Clear Your Browser Cache …
3. Check Your Server Logs …
4. Error Establishing a Database Connection …
5. Check Your Plugins and Themes …