Warning: require(./lib/pkp/includes/bootstrap.inc.php) [function.require]: failed to open stream: No such file or directory in D:\xampp\htdocs\tca\index.php on line 61

Fatal error: require() [function.require]: Failed opening required './lib/pkp/includes/bootstrap.inc.php' (include_path='.;D:\xampp\php\pear\') in D:\xampp\htdocs\tca\index.php on line 61