im having a problem with this. i dont know what else to do. can you help me?
ubuntu@sdnhubvm:~[21:52]$ sudo dpkg -i df.aggregate-1.0.14-Helium-defense4all.deb
Selecting previously unselected package defense4all.
(Reading database ... 141052 files and directories currently installed.)
Preparing to unpack df.aggregate-1.0.14-Helium-defense4all.deb ...
Unpacking defense4all (1.0.14-SNAPSHOT) ...
Setting up defense4all (1.0.14-SNAPSHOT) ...
Configuring cassandra cluster for defense4all
Configuring rsyslog service for defense4all
Failed to start rsyslog service
Fail to configure rsyslog for defense4all
/var/lib/dpkg/info/defense4all.postinst: 20: exit: Illegal number: -1
dpkg: error processing package defense4all (--install):
subprocess installed post-installation script returned error exit status 2
Processing triggers for ureadahead (0.100.0-16) ...
Errors were encountered while processing:
defense4all