WordPress currently has more than 40,000 plugins that you can incorporate into your website, for a variety of purposes, from SEO to minor site performance fixes. To counter some of the security problems, wordpress releases a lot of updates. While these updates are useful and necessary to keep your information secure, they can also present a major headache. With this, there's often not much you can do except wait until it works again.
You can also contact the server to let them know there is a problem. If this is an internal server error, we have a quick fix. If it's small as 64m, you can double that number to 120m or, if necessary, to 256m. Kill any PHP process and confirm the changes you've made, then refresh your page and check if the error persists.
When you get a 404 error, it almost always means that the server couldn't find your Wordpress page. HTTP 404 errors can occur when there is a broken link or a change in a URL. If it happens with a page that is normally available, it is usually due to a problem with the.htaccess file, as well as with the internal server error. This should correct the HTTP 404 error.
The code may have incorrect syntax, or you may have omitted one or two characters when copying it. This error message usually appears when something is wrong, but the server doesn't know where the problem is. This usually means that something went wrong during communication between the browser that your site visitor uses and your site's server.