Problem after first install playsms manualy using centos 6.8

hi guys

i just try to install playsms 1.3.1 in centos 6.8 x64 machine
i have follow https://github.com/antonraharja/playSMS/blob/master/INSTALL.md
but still when i try to start its always fail

playsmsd start

Unable to start playsmsd

how do i trouble shoot this ? pls give me some hint …