Based on Yenthe’s issue on Github https://github.com/wkhtmltopdf/wkhtmltopdf/issues/3898 and thanks to the new builds provided by Ashish Kulkarni, the procedure is straightforward:
sudo wget https://builds.wkhtmltopdf.org/0.12.1.3/wkhtmltox_0.12.1.3-1~bionic_amd64.deb sudo dpkg -i wkhtmltox_0.12.1.3-1~bionic_amd64.deb sudo apt-get install -f sudo ln -s /usr/local/bin/wkhtmltopdf /usr/bin sudo ln -s /usr/local/bin/wkhtmltoimage /usr/bin
apt-get install -f will install the missing dependencies, which are shown as errors by the dpkg command.
You can find other builds for wkhtmltopdf 0.12.1.3 suitable for Odoo on different Linux systems here: https://builds.wkhtmltopdf.org/0.12.1.3/
Happy Odooing !