an Error 404 is a client-side error, implying that the error is your mistake, either because you typed the URL incorrectly or the page has been moved or removed from the website and you should have known.
Fix the 404 Not Found Error
_Retry the web page by pressing F5, clicking the refresh/reload button, or trying the URL from the address bar again.
The 404 Not Found error might appear for several reasons even though no real issue exists, so sometimes a simple refresh will often load the page you were looking for.
_Check for errors in the URL. Often times the 404 Not Found error appears because the URL was typed wrong or the link that was clicked on points to the wrong URL.
_Move up one directory level at a time in the URL until you find something.