How to enable WordPress debug mod

How to enable WordPress debug mode. Add these lines to your wp-config.php file:

// Enable WP_DEBUG mode
define( 'WP_DEBUG', true);
// Enable Debug logging to the /wp-content/debug.log file
define( 'WP_DEBUG_LOG', true);
// Disable display of errors and warnings
define( 'WP_DEBUG_DISPLAY', false);
@ini_set( 'display_errors', 0);
// Use dev versions of core JS and CSS files (only needed if you are modifying these core files)
define( 'SCRIPT_DEBUG', true);

NOTE: You must insert this BEFORE /* That's all, stop editing! Happy blogging. */ in the wp-config.php file.

This will log error messages to a file called debug.log in the wp-content directory OR error_log in the main folder