Warning: require_once (constants.php): failed to open stream

Hello,

we installed easyblog on our Intranet, but if want to login in frontend (to access to the registered item), or if I want to log in the backend, we have this error message.

Warning: require_once(/var/www/intranet/components/com_easyblog/constants.php): failed to open stream: No such file or directory in /var/www/intranet/components/com_easyblog/helpers/helper.php on line 22 Fatal error: require_once(): Failed opening required '/var/www/intranet/components/com_easyblog/constants.php' (include_path='.:/usr/share/php:/usr/share/pear') in /var/www/intranet/components/com_easyblog/helpers/helper.php on line 22 

If you have a idea to fix it ?

Thank you very much.

Regard.