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Warning: Use of undefined constant WPINC - assumed 'WPINC' (this will throw an Error in a future version of PHP) in E:\www\web\wp-includes\class-wp-customize-section.php on line 408

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Fatal error: require_once(): Failed opening required 'ABSPATHWPINC/customize/class-wp-customize-themes-section.php' (include_path='E:\XAMPP\php\PEAR') in E:\www\web\wp-includes\class-wp-customize-section.php on line 408