To start logging errors you'll need to make a few changes to the WordPress configuration.

Please add this code to your wp-config.php and then click "Done":

Recommended: To log all types of errors instead of only fatal errors and warnings, also find the line define( 'WP_DEBUG', false ); and change it to define( 'WP_DEBUG', true );.

Documentation: Editing wp-config.php

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Please follow the manual configuration instructions instead.

Manual Configuration Instructions

To get started you need to do two things:

1. Create a log file.
2. Configure PHP to write all errors to that file.

Creating a Log File

First, decide where you want to put the log file on your server. For security purposes, it should usually be in a directory that can't be accessed by site visitors and non-admin users. For example, you could create a "php-logs" directory above the web root and place the file there.

Create an empty text file and upload it to your selected directory. The file name doesn't matter. Here are some suggestions: "php-errors.log", "error_log_example.com.txt", "WordPress_errors.log"

Change the file permissions to allow PHP to write to the file. This step will vary depending on the server configuration. If you're unsure what permissions to use, try using the same settings as for the files in /wp-content/uploads, or refer to the documentation provided by your hosting provider.

Changing the PHP Configuration

Next, please add this code to wp-config.php and replace the placeholder /path/to/log-file.txt with the actual path to the new log file:

Also, find the line define( 'WP_DEBUG', false ); and change it to define( 'WP_DEBUG', true );. This code enables "debug" mode in WordPress. This is makes it possible to log everything including PHP notices and other minor errors. If debugging is disabled, WordPress will automatically change error reporting settings to log only fatal errors and warnings. More information about WP_DEBUG.

When that's done, please go to the Dashboard. You should see a message like "Log is empty" in the "PHP Error Log" widget. This is normal - the log will stay empty until an error actually happens.