How to Fix: Error logging enabled

Error logging enabled is an important SEO check in the Technical Foundation category. This is a medium-priority issue, but it is the one I would fix first on any site I am about to maintain, because without logs you are flying blind, and everything else on this list gets harder to diagnose.

What is This Check About?

This check verifies that your site is quietly recording PHP errors, warnings, and notices to a log file instead of either hiding them completely or — far worse — printing them onto the live page for visitors and Google to see. WordPress controls this through a few constants in wp-config.php: WP_DEBUG, WP_DEBUG_LOG, and WP_DEBUG_DISPLAY. When this check fails, it usually means errors are going nowhere useful, so problems build up invisibly until something breaks in a way you cannot trace.

Why Does This Matter for SEO?

Search engines like Google evaluate hundreds of factors when ranking websites. Error logging enabled is one of these important factors because:

• It affects how search engines crawl and understand your content
• It impacts user experience, which is a key ranking factor
• It can influence your site’s visibility in search results
• Ignoring it may cause your competitors to outrank you

Two ways this touches SEO directly. First, PHP warnings printed onto a live page can leak into your HTML — sometimes at the very top, above the doctype — which breaks the page for the crawler and can wreck how it is rendered and indexed. Second, silent errors are silent problems: a plugin conflict slowing every request, a fatal that white-screens one template, a broken redirect. Logging is how you catch those while they are small, before they cost you crawl budget or rankings.

I Have Debugged in the Dark. You Do Not Want To.

Let me tell you why I have no patience for a site with no logs. I cut my teeth writing Lingo, the scripting language inside Macromedia Director, and in those days a proper debugger was a luxury you often did not have. When something misbehaved, your entire diagnostic toolkit was a put statement — you littered the code with little messages that dumped a value into a message window, ran the thing, and squinted at what came out. You reconstructed the story of a bug from a trail of breadcrumbs you had to remember to drop in advance.

That era taught me one thing permanently: the log is the story of what your software actually did, as opposed to what you assumed it did, and the two are different more often than anyone likes. WordPress hands you that trail for free through debug.log — you do not have to scatter breadcrumbs by hand, the system records them for you. A site running without it is a site whose owner has chosen not to know what is going wrong. When a client calls in a panic about an intermittent error, the first question I ask is whether logging is on, because if it is, the answer is usually already sitting in the file, timestamped and waiting.

Log, but Never Display, on Production

Here is the one distinction that matters and that people get backwards. You want errors logged, you do not want them displayed. On a live site the correct combination is:

• WP_DEBUG set to true — so WordPress actually generates the errors and notices.
• WP_DEBUG_LOG set to true — so they are written to wp-content/debug.log where you can read them.
• WP_DEBUG_DISPLAY set to false — so none of it ever renders on the page for a visitor or a crawler to see.

That combination gives you the diagnostic trail without exposing a single warning to the public. The failure mode I clean up most often is the opposite: WP_DEBUG on with display left at its default, spraying notices across the live front end. Log quietly, read privately, show nothing.

How to Check This Issue

You can identify this issue by:

1. Running an SEO audit using the SEO Roadmap tool
2. Manually inspecting your website’s source code and settings
3. Using browser developer tools (F12) to analyze page elements
4. Checking Google Search Console for related warnings or errors

How to Fix This in WordPress

Difficulty Level: EASY – This fix is straightforward and can typically be completed by anyone with basic WordPress knowledge.

Estimated Time: 5 min

Follow these steps to fix this issue:

Step 1: Identify Affected Pages

First, run a complete SEO audit to identify all pages affected by this issue. The SEO Roadmap tool will show you exactly which URLs need attention. Logging is a site-wide setting, so this is one fix rather than a per-page cleanup.

Step 2: Access WordPress Settings

This fix lives in wp-config.php, reachable through your host’s file manager or SFTP. Depending on the specific issue, you may also touch:

• Settings → General for site-wide configurations
• Settings → Reading for indexing and visibility settings
• Settings → Permalinks for URL structure issues
• Appearance → Theme Editor for template-level fixes
• Plugins → Installed Plugins to configure SEO plugins

Step 3: Apply the Fix

In wp-config.php, above the /* That's all, stop editing! */ line, set WP_DEBUG and WP_DEBUG_LOG to true and WP_DEBUG_DISPLAY to false. Errors will then collect in wp-content/debug.log. If you prefer not to edit the config file, several logging and health plugins expose the same controls with a UI. If you’re using an SEO plugin like Yoast SEO or Rank Math, note this is a config-level task rather than an SEO-plugin one.

Step 4: Verify the Fix

After making changes:

1. Clear your WordPress cache if you’re using a caching plugin
2. Re-run the SEO Roadmap audit to confirm the issue is resolved
3. Check Google Search Console after a few days to ensure Google has recognized the fix

Recommended Tools & Plugins

These tools can help you fix and prevent this issue:

• Yoast SEO – Comprehensive SEO plugin with built-in checks
• Rank Math – Feature-rich SEO plugin with detailed analysis
• Google Search Console – Free tool to monitor your site’s search presence
• SEO Roadmap – Complete SEO audit and action plan tool

Common Mistakes to Avoid

• Making changes without testing in a staging environment first
• Ignoring the issue because it seems minor
• Applying fixes to production without proper backup
• Not verifying the fix was successful after implementation

Two specific traps. Leaving WP_DEBUG_DISPLAY on in production exposes errors to the public — never do it. And a debug.log in the default location can, on some setups, be reachable over the web; keep it out of the public path or protect it, because an error log can leak file paths and internal details. Log for yourself, not for the world.

Need More Help?

If you’re still having trouble fixing this issue, consider:

• Consulting with a WordPress developer or SEO specialist
• Checking the WordPress support forums for similar issues
• Reviewing your theme and plugin documentation
• Running a complete site audit with SEO Roadmap for a prioritized action plan

This guide is part of the SEO Roadmap knowledge base – your complete resource for WordPress SEO optimization.