The Fluid Topics PDF server daemon is expected for either the front server, the indexer server, or one of the other available servers. Check that the Fluid Topics PDF Server daemon is running on one of these servers by using the following command:
As root user
systemctl status fluidtopics-pdf-server
The following result is expected:
● fluidtopics-pdf-server.service - Fluid Topics Pdf Server
...
Active: active (running) since mar. 2018-11-13 14:11:06 UTC; 496ms ago
...
The PID number is randomly assigned to an operation and does not have to match the documentation.
If the Fluid Topics PDF server is not running, use the following command:
As root user
systemctl start fluidtopics-pdf-server