Warning: require_once(Zend/Http/Client/Exception.php): failed to open stream: No such file or directory in C:\Apache24\htdocs\library\Zend\Http\Client\Adapter\Exception.php on line 26

Fatal error: require_once(): Failed opening required 'Zend/Http/Client/Exception.php' (include_path='.;C:\php\pear') in C:\Apache24\htdocs\library\Zend\Http\Client\Adapter\Exception.php on line 26