[GUIDE] Ubuntu repository - maintained by djcj

[djcj]

I don't know. I guess the vapoursynth Python module isn't loaded somehow.
I built it on Ubuntu 16.04, tested it with "vspipe --version" on Ubuntu 18.04 and didn't get the "Failed to get ..." error.
Check the content of env.sh and vapoursynth.conf.

Edit: to clarify, I ran build-vapoursynth.sh on Ubuntu 16.04 and install-vs.sh on Ubuntu 18.04.