sam_chowdhury12 on "Fatal Error"

Please HELP...

MY site is down.I can not access WordPress account, my site showing

Warning: require(/home/.sites/612/site2086/web/wp-includes/load.php): failed to open stream: No such file or directory in /home/.sites/612/site2086/web/wp-settings.php on line 21

Fatal error: require(): Failed opening required '/home/.sites/612/site2086/web/wp-includes/load.php' (include_path='.:/usr/share/pear') in /home/.sites/612/site2086/web/wp-settings.php on line 21

I can access through FTP.