Thanks for your response. Yes sure, I did follow the guide provided. But you may not be aware that Wkhtmltopdf didn't provide version 0.12.5 in linux-generic build anymore.
Instead, version 0.12.4 is available with linux-generic build. Then I used the guide provided with version 0.12.4 to install, but it got fontconfig error return.
Tried some other solutions found on the Internet and finally can install the version 0.12.4, but once the odoo has to produce the pdf, it prompts that Wkhtmltopdf cannot be found.
Then I tried again to install version 0.12.5 by using the following commands:
sudo apt install -f ./wkhtmltox0.12.5-1.xenial_amd64.deb_
Again, it prompts fontconfig error.
Can you try to deploy the odoo on Azure stack once? I have did nothing for the setting and go to install the wkhtmltopdf immediately.
And, could you please update the docs in order to correctly shown the installation with the latest wkhtmltopdf version? As recommended, it suggests to install version 0.12.5 on Ubuntu 16.04.4.
Thanks for your help.