[chord] Starting Chord error

[Tung Thanh Nguyen]

Hi all,
I am new to Chord. When I run the stard-dhash script:
$ lsd/start-dhash --root dhash-b -j 172.30.8.93:6000 -p 6
000 -v 16&
[1] 1490

When I examine the log.lsd, I found the following error:
Configurator::get_int: unknown field dhash.default_lifetime

Could you tell me how to solve it? and why we have this error? I also tried to run start-dhash on 4 nodes, each has 4 vnodes.
Thanks
TUNG
PS: I attach the log.lsd file