Can't get completion to work

[leonardobanchi]

I'm on debian testing, so digestif is already packaged in texlive-extra-utils. I have a basic setup for my editor (this) but completion (I tried tikz from the example) does not work.
I tried following the recommendation, using the install script locally, but same problem.
Don't know how useful it is, but if I run packaged digestif from my shell and press ENTER I get

Content-Length: 148

{"id":null,"error":{"code":-32700,"message":"/usr/share/texlive/texmf-dist/scripts/digestif/digestif.zip:590: Error decoding json"},"jsonrpc":"2.0"}

If I try the same with a locally installed version I get

Content-Length: 128

{"jsonrpc":"2.0","id":null,"error":{"code":-32700,"message":"/home/me/.digestif/digestif/util.lua:590: Error decoding json"}}