Open your root directory and locate your wp-config.php file. Download to your computer by right-clicking on the file. Open the file in your preferred text editor and insert this code bit under the PHP tag:

define(‘WP_MEMORY_LIMIT’, ’64M’);
Save the file, and re-upload it to your root directory, overwriting the original file. Refresh the client, and refresh your site. If you still see the error, you are not having PHP memory limit issues. Remove the above code from the wp-config.php file on your computer, save it, and re-upload it to your root directory.

Don’t get too excited if you don’t see the error. Regardless you have some work to do.

Increasing your site’s PHP memory limit in the wp-config.php file is the equivalent of pouring bleach down your kitchen sink when it smells like rotten eggs. You’re fixing the problem well enough to get rid of the offensive odor, but you’re not fixing the bigger issue at hand, which is likely a clog somewhere in the pipes that lead to your sink.

The same is true with increasing your site’s PHP memory limit. You may have increased it yourself in the file, but something is still exhausting your limit. You can follow the steps in the next few sections to try and find out what that might be, but if worst comes to worst, you’ll likely need to convince your host to increase the limit on your server.