I tried a brand new VM in azure with ubuntu 20.04 and the following setup
wget -qO- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash
nvm install 8.11.3
mkdir jsreportapp
cd jsreportapp
npm i -g jsreport-cli
jsreport init
jsreport configure
# chrome dependencies
sudo apt-get update
sudo apt-get install -y libgconf-2-4
sudo wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add -
sudo sh -c 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list'
sudo apt-get update
sudo apt-get install -y google-chrome-unstable fonts-ipafont-gothic fonts-wqy-zenhei fonts-thai-tlwg fonts-kacst --no-install-recommends
sudo apt-get install -y libxtst6 libxss1 libx11-xcb1
jsreport start
Afterward I can render the invoice sample. Could you try the same?