cgit dependencies

[Sukma Wardana]

Hi,
 
I just installed cgit on my Slackware VPS, everything is work well.
However, I couldn't make the about-formatting.sh and email-gravatar.lua work.
 
So, far I already installed Lua 5.1 & luaossl-20170903, but it's keep give error.
So, do I install the correct version of Lua and lua ossl?
 
For the about-formatting.sh what kind of requirements to enable this feature?
 
I already read the README and cgitrc.5.txt, but can't find the answer for my problem.
 
Please kindly advice how to solve my problem.
 
Cheers,
Sukma Wardana