If you are getting http error in WordPress while uploading files to Media Library , It means some sort of interruption is happening in between WordPress file handling operations and web server interface . Before doing a workaround always wait for a few moments and refresh the page once and retry the same process to make sure that it is not a temporary glich from your hosting panel . If you still face the same error again , please try the following solutions . Before doing these steps always make sure that you have a complete healthy backup of your site.