Quick copy and paste to enable error logging in WordPress.

Put the below in wp-config.php

define('WP_DEBUG', true);
if (WP_DEBUG) {
       @error_reporting(E_ALL);
       @ini_set('log_errors', true);
       @ini_set('log_errors_max_len', '0');
       define('WP_DEBUG_LOG', true);
       define('WP_DEBUG_DISPLAY', false);
       define('CONCATENATE_SCRIPTS', false);
       define('SAVEQUERIES', true);
}