/theme-errors/

WordPress Theme Errors and Troubleshooting

Resolve theme update failures, missing stylesheets, broken layouts, customizer issues, and child theme problems that affect design or crash the site.

36 topics · 1 published guides

Common symptoms

Broken layout or missing header/footer
Theme missing stylesheet error
Customizer blank or options not saving
Site broke after a theme update
Child theme changes not appearing

Start here

01 Switch temporarily to a default theme if possible
02 Check for a child theme and recent theme updates
03 Clear caches (plugin, host, CDN)
04 Review theme error logs and PHP compatibility

Most common problems

6 signals

On the board Intermediate

WordPress theme causes critical error

Learn what causes “WordPress theme causes critical error,” how to recognize symptoms, and safe steps to diagnose and repair the problem.

Intermediate Theme Errors

WordPress theme update broke website

Learn what causes “WordPress theme update broke website,” how to recognize symptoms, and safe steps to diagnose and repair the problem.

Visitors or admins encounter: WordPress theme update broke website

On the board Intermediate

WordPress theme causes blank page

Learn what causes “WordPress theme causes blank page,” how to recognize symptoms, and safe steps to diagnose and repair the problem.

On the board Intermediate

WordPress theme customizer not loading

Learn what causes “WordPress theme customizer not loading,” how to recognize symptoms, and safe steps to diagnose and repair the problem.

On the board Intermediate

WordPress theme functions.php error

Learn what causes “WordPress theme functions.php error,” how to recognize symptoms, and safe steps to diagnose and repair the problem.

On the board Intermediate

WordPress theme layout broken

Learn what causes “WordPress theme layout broken,” how to recognize symptoms, and safe steps to diagnose and repair the problem.

All problems in this category

Showing 36 topics · 1 published guides

P1 · intermediate
WordPress theme causes critical error
Learn what causes “WordPress theme causes critical error,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P1 · intermediate
WordPress theme update broke website
Learn what causes “WordPress theme update broke website,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
P2 · intermediate
WordPress theme causes blank page
Learn what causes “WordPress theme causes blank page,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P2 · intermediate
WordPress theme customizer not loading
Learn what causes “WordPress theme customizer not loading,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P2 · intermediate
WordPress theme functions.php error
Learn what causes “WordPress theme functions.php error,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P2 · intermediate
WordPress theme layout broken
Learn what causes “WordPress theme layout broken,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P2 · intermediate
WordPress theme looks different after update
Learn what causes “WordPress theme looks different after update,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P2 · intermediate
WordPress theme missing stylesheet error
Learn what causes “WordPress theme missing stylesheet error,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress child theme changes not showing
Learn what causes “WordPress child theme changes not showing,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress child theme not working
Learn what causes “WordPress child theme not working,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme CSS not loading
Learn what causes “WordPress theme CSS not loading,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme customization disappeared
Learn what causes “WordPress theme customization disappeared,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme customizer shows blank page
Learn what causes “WordPress theme customizer shows blank page,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme demo import failed
Learn what causes “WordPress theme demo import failed,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme fonts not loading
Learn what causes “WordPress theme fonts not loading,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme footer missing
Learn what causes “WordPress theme footer missing,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme header missing
Learn what causes “WordPress theme header missing,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme icons not displaying
Learn what causes “WordPress theme icons not displaying,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme images missing
Learn what causes “WordPress theme images missing,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme incompatible with PHP version
Learn what causes “WordPress theme incompatible with PHP version,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme incompatible with WordPress version
Learn what causes “WordPress theme incompatible with WordPress version,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme installation failed
Learn what causes “WordPress theme installation failed,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme JavaScript not working
Learn what causes “WordPress theme JavaScript not working,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme license activation failed
Learn what causes “WordPress theme license activation failed,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme looks different after migration
Learn what causes “WordPress theme looks different after migration,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme menu disappeared
Learn what causes “WordPress theme menu disappeared,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme mobile layout broken
Learn what causes “WordPress theme mobile layout broken,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme options not saving
Learn what causes “WordPress theme options not saving,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme outdated template warning
Learn what causes “WordPress theme outdated template warning,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme required plugin error
Learn what causes “WordPress theme required plugin error,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme syntax error
Learn what causes “WordPress theme syntax error,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme template file missing
Learn what causes “WordPress theme template file missing,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme translation not loading
Learn what causes “WordPress theme translation not loading,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme undefined function error
Learn what causes “WordPress theme undefined function error,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme widgets disappeared
Learn what causes “WordPress theme widgets disappeared,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon
P3 · advanced
WordPress theme will not activate
Learn what causes “WordPress theme will not activate,” how to recognize symptoms, and safe steps to diagnose and repair the problem.
Coming soon

Related categories

Frequently asked questions

Will switching themes delete my content? +

Posts and pages stay in the database. Theme-specific widgets, builder layouts, or theme options may not appear under a different theme.

Repair dispatch

Still Need Help Fixing Your Website?

If you are not comfortable editing website files, changing server settings, repairing a database, or troubleshooting a live website, professional help may prevent additional damage or downtime. We will review the problem before accepting the repair.

You will receive a clear explanation of the likely cause.
We will tell you if the issue falls outside our repair scope.
No additional work will be performed without approval.
A backup should be created whenever access and website condition allow it.

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