Warning: require_once(fpdf/fpdf.php): failed to open stream: No such file or directory in D:\xampp\htdocs\app\rotation.php on line 2

Fatal error: require_once(): Failed opening required 'fpdf/fpdf.php' (include_path='D:\xampp\php\PEAR') in D:\xampp\htdocs\app\rotation.php on line 2