your installation of wkhtmltopdf seems to be broken.
sudo apt-get update sudo apt-get install xvfb libfontconfig wkhtmltopdf (Check your path to wkhtmltopdf it can be /usr/local/bin/wkhtmltopdf).
Unable to find Wkhtmltopdf on this system. The report will be shown in html. It means you need to upgrade the version of Wkhtmltopdf library on your server.
wkhtmltopdf and wkhtmltoimage are open source (LGPLv3) command line tools to render HTML into PDF and various image formats using the Qt WebKit renderingTry to set the key as ‘webkit_path’ and also check the version of the ‘wkhtmltopdf’ , it should ‘0.12.2.1’ . If you are using the config
6, which was released on June 11, 2020 – see changes since 0.12.5. OS/Distribution, Supported on, Architectures. Windows, Installer (Vista or later), 64-bit