To address memory limit issues, there are two paths:
Edit your wp-config.php file #
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.
Edit your PHP.ini file #
If you have access to your PHP.ini file, change the line in PHP.ini
If your line shows 64M try 256M:
memory_limit = 256M ; Maximum amount of memory a script may consume (64MB)
Edit your .htaccess file #
If you don’t have access to PHP.ini try adding this to an .htaccess file:
php_value memory_limit 256M