How do I enable error logging to help debug a 500 error related to .htaccess?

For Apache, you typically need to edit your Apache configuration file (httpd.conf or apache2.conf). Find the `ErrorLog` directive and ensure it's set to a valid file path where the server can write errors. Set the `LogLevel` to `debug` for more verbose logging. After saving the configuration, restart Apache. The error log will then contain detailed information about the 500 error, including the specific line in .htaccess causing the issue.