Warning: require(../fpdf.php): failed to open stream: No such file or directory in /opt/lampp/htdocs/cfapp_pdf/fpdf181/tutorial/tuto7.php on line 3

Fatal error: require(): Failed opening required '../fpdf.php' (include_path='.:/opt/lampp/lib/php') in /opt/lampp/htdocs/cfapp_pdf/fpdf181/tutorial/tuto7.php on line 3