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?