Zeek wont start returned exit code '1',

yorke

Zeek wont start gives error

/pkg_edit.php: The command '/usr/local/etc/rc.d/zeek.sh start' returned exit code '1',
the output was 'Error: error occurred while trying to send mail: send-mail: /usr/sbin/sendmail not found Error:
zeek terminated immediately after starting; check output with "diag" checking configurations ... installing ...
removing old policies in /usr/local/spool/installed-scripts-do-not-touch/site ...
removing old policies in /usr/local/spool/installed-scripts-do-not-touch/auto ...
creating policy directories ... installing site policies ... generating standalone-layout.zeek ...
generating local-networks.zeek ... generating zeekctl-config.zeek ... generating zeekctl-config.sh ...
stopping ... stopping zeek ... creating crash report for previously crashed nodes: zeek starting ... starting zeek ...

yorke

The zeek error above is on pfSense 2.6.0
do anyone have it working on pfSense 2.6.0