The error message is generally caused by a photo or a page on a site that cannot be found. If you have placed a website in the public_html folder and the error appears on the home page, then it cannot be found. Often, the error lies in the .htaccess file. This file ensures that visitors are immediately redirected to the index page. For example: visitors go to mdwx.be and end up on the landing page. This could be the index.php or index.html file.
Steps to check when you have a 404 error message.
Check the paths of the file that is being attempted to be retrieved. If you no longer know exactly which file needs to be accessed, you must use the tools within the browser to find this out. The tools are usually accessible by pressing F12 once on the page.