Download the utility for your plateform from the GitHub repo
Example for Linux:
curl -L -o - https://github.com/owulveryck/wardleyToGo/releases/download/v0.6.0-newdsl/wardleyToGo_0.6.1-newdsl_Linux_x86_64.tar.gz | tar xzvf -
cat vc.wtg| ./wtg2svg > test.svg