Warning and Fatal error with Jetpack

Hello,

I can’t see my site or login because I’m getting this messajes:

Warning: require_once(/www/xxxxxxx.com.ar/xxxxx/wp-content/plugins/jetpack/class.jetpack-data.php): failed to open stream: No such file or directory in /www/xxxxxx.com.ar/xxxxxx/wp-content/plugins/jetpack/jetpack.php on line 34

Fatal error: require_once(): Failed opening required ‘/www/xxxxx.com.ar/xxxxx/wp-content/plugins/jetpack/class.jetpack-data.php’ (include_path=’./:/usr/local/php5.4/lib/php’) in /www/xxxxxx.com.ar/xxxxxxx/wp-content/plugins/jetpack/jetpack.php on line 34

Any ideas?