WooCommerce fatal error: where do I find logs and debug output?

Logs and error output are often the fastest way to diagnose WooCommerce failures because the storefront may hide the true error. Merchants should gather evidence before changing plugins, payments, or checkout settings.

Fatal errors, PHP warnings, image failures, and broken callbacks may only be visible in server or WooCommerce logs. If you skip log collection, you often end up changing settings that were never the real cause of the failure.

Open the PHP and WooCommerce logs first, capture the exact error timing, and then compare that evidence against the support workflow. That gives you a reliable starting point for support tickets, extension debugging, or rollback decisions.

Official URLs to review:

• PHP error logs guide
• WooCommerce troubleshooting guide