A 404 error is an HTTP status code that means the page you were trying to reach on a website could not be found on their server. Here’s what you can do.
Try the web page again by pressing F5, clicking/tapping the Refresh/Reload button, or by repeatedly trying the URL in the address bar.
The 404 Not Found error can appear for a number of reasons, even if there is no real problem. Sometimes, refreshing the page will load the page you are looking for.
Check for errors in the URL. Often this error appears because the URL is mistyped or the selected link points to the wrong URL.