Starting with version 768 the base engine for PDF graphics display has been changed.
Until v767 we used the Phantom.js engine but from version v768 onwards we will use chromium.
In case the PDF reports are not being displayed correctly, the solution would be to install chromium in the PandoraFMS Server.
To do so, simply run this installation command and the problem will be solved:
yum install -y chromium
After the installation it is important to restart the Apache service to take the changes:
service httpd restart
Once this dependency is installed, we will check that the graphs are exported correctly once again.