Plugin Error

I have installed the plugin in an attempt to troubleshoot a problem with another plugin. I am seeing this in the PHP Error Log screen –

The current error_log value error_log is not supported. Please change it to an absolute path.
To enable error logging, create an empty file named “php-errors.log”. Place it in a directory that is not publicly accessible (preferably outside your web root) and ensure it is writable by the web server. Then add the following code to wp-config.php:
ini_set(‘log_errors’, ‘On’);
ini_set(‘error_log’, ‘/full/path/to/php-errors.log’);

I try not to make any changes in the WP files since I am not a programmer and therefore am not familiar with PHP.