Using WP_DEBUG_LOG to log errors

To log errors triggered by WordPress plugins, you can use the debug log.

1. Edit your wp-config.php file
2. Add the following lines to enable debug (if these are already defined, edit the values):

define( 'WP_DEBUG', true );
define( 'WP_DEBUG_LOG', true );
define( 'WP_DEBUG_DISPLAY', false );

3. As errors are logged, they should appear in wp-content/debug.log. You can open this file in a text editor.

This will enable the debug log, but will hide errors on your site.

For more information see Debugging in WordPress.