Warning: main(vendor/autoload.php) [function.main]: failed to open stream: No such file or directory in C:\wamp\www\tfpdf\1.25\tFPDF-master\ex.php on line 7

Fatal error: main() [function.require]: Failed opening required 'vendor/autoload.php' (include_path='.;c:\php4\pear') in C:\wamp\www\tfpdf\1.25\tFPDF-master\ex.php on line 7