If you are experiencing Memory Exhausted errors on your WordPress installation, it’s usually due to a plugin, theme or other script exceeding the default allocated memory size limit.
The solution is to increase your PHP Memory limit. HostPapa VPS users can adjust the memory limit by making a change to the WordPress wp-config.php file.
Read this complete guide “How to Fix WordPress Memory Exhausted Error”
Increase PHP Memory Limit in WordPress
First you need to edit the wp-config.php file on your WordPress site. It is located in your WordPress site’s root folder, and you will need to use an FTP client or file manager in your web hosting control panel.
Next, you need to paste this code in wp-config.php file just before the line that says ‘That’s all, stop editing! Happy blogging.’
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define( 'WP_MEMORY_LIMIT', '256M' );
This code tells WordPress to increase the PHP memory limit to 256MB.
Once you are done, you need to save your changes and upload your wp-config.php file back to your server.
You can now visit your WordPress site and memory exhausted error should disappear now.
Regards, James