The 500 Internal Server Error is a server-side error, meaning the problem probably isn't with your computer or internet connection but instead with the website's server.
While not probable, there may be something wrong on your end, in which case we'll look at some things you can try:
Reload the web page. You can do that by selecting the refresh/reload button, pressing F5 or Ctrl+R, or trying the URL again from the address bar.
Even if the 500 Internal Server Error is a problem on the webserver, the issue might be temporary. Trying the page again will often be successful.
If the message appears during the checkout process at an online merchant, be aware that duplicate attempts to checkout may end up creating multiple orders— and multiple charges! Most merchants have automatic protections from these kinds of actions, but it's still something to keep in mind.
Clear your browser's cache. If there's a problem with the cached version of the page you're viewing, it could be causing HTTP 500 issues.
Caching issues do not often cause internal Server Errors, but we have, on occasion, seen the error go away after clearing the cache. It's such an easy and harmless thing to try, so don't skip it.
Delete your browser's cookies. You can correct some 500 Internal Server Error issues by deleting the cookies associated with the site on which you're getting the error.
After removing the cookie(s), restart the browser and try again.
This may help you,
Rachel Gomez