Warning: Use of undefined constant WP_CONTENT_DIR - assumed 'WP_CONTENT_DIR' (this will throw an Error in a future version of PHP) in E:\www\web\wp-admin\includes\upgrade.php on line 12

Warning: Use of undefined constant ABSPATH - assumed 'ABSPATH' (this will throw an Error in a future version of PHP) in E:\www\web\wp-admin\includes\upgrade.php on line 17

Warning: require_once(ABSPATHwp-admin/includes/admin.php): failed to open stream: No such file or directory in E:\www\web\wp-admin\includes\upgrade.php on line 17

Fatal error: require_once(): Failed opening required 'ABSPATHwp-admin/includes/admin.php' (include_path='E:\XAMPP\php\PEAR') in E:\www\web\wp-admin\includes\upgrade.php on line 17