Why Theme Check Says Your Theme Has Errors But It Works Fine

You run Theme Check on your custom theme. It shows 20 errors. But your theme works. No problems. That is frustrating because you do not know which errors matter.

A common issue is that Theme Check checks against WordPress coding standards. Some standards are outdated. Some are too strict. Your theme works because it uses modern code that Theme Check does not recognize. The plugin is not wrong. But not all errors are critical.

Why Theme Check Shows False Errors

Theme Check applies WordPress coding standards from official repository. Some standards were written years ago. Modern PHP features may trigger warnings. Also, some required features (like custom logo support) are optional for custom themes. Theme Check marks them as required. Your theme works without them.

This is not Theme Check being bad. It checks against ideal standards. Not all standards are mandatory.

Which Theme Check Errors You Can Ignore

• “No custom logo support found” (optional feature)
• “No custom header support found” (optional)
• “No custom background support found” (optional)
• “Possible variable variable found” (false positive on valid code)
• “Expected next thing to be an escaping function” (false positive)

These are recommendations, not requirements.

Which Theme Check Errors Actually Matter

• “Missing esc_html” (security issue – XSS vulnerability)
• “Missing wp_enqueue_script” (loading scripts incorrectly)
• “Direct database query detected” (bypassing WordPress security)
• “Missing text domain” (translation issues)
• “Found PHP short tag” (may break on some servers)

Fix these. They affect security and compatibility.

How to Use Theme Check Properly

1. Run Theme Check on your theme
2. Ignore optional feature warnings (custom logo, header, background)
3. Focus on security warnings (escaping, sanitization)
4. Focus on compatibility warnings (PHP short tags, deprecated functions)
5. Test your theme on staging site
6. Fix only critical errors

Do not waste time on optional feature warnings.

Alternative: Use Theme Check in Combination With Debug Log

Enable WP_DEBUG in wp-config.php. Load your theme. Check debug.log for PHP errors. Real errors appear in debug log. Theme Check warnings may be false positives. Trust debug log more than Theme Check.

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

People Also Ask About Theme Check Errors

Why does Theme Check say my theme has errors but it works fine?

Because many warnings are for optional features or coding standards, not actual bugs.

Should I fix all Theme Check errors?

No. Fix security and compatibility errors. Ignore optional feature warnings.

Is Theme Check worse than Theme Check Plus?

Both check against same standards. Same false positives.

Final Thoughts

If Theme Check shows errors but theme works, ignore optional feature warnings. Fix security and compatibility warnings only. Use WP_DEBUG log for real errors. Your theme is probably fine.