This usually happens due to a plugin conflict, corrupted theme files, or a PHP memory limit issue. Try these quick fixes:
Deactivate all plugins, then reactivate the theme.
Clear your browser cache and site cache (if using a caching plugin).
Increase PHP memory limit in wp-config.php:
define(‘WP_MEMORY_LIMIT’, ‘256M’);
Re-upload the theme via FTP instead of the WordPress dashboard.
Check the error logs for specific conflict details.
If the issue persists, it’s likely a corrupted theme file — try re-downloading and reinstalling it fresh.