Check that the Fluid Topics web server daemon is running by using the following command:
As root user
systemctl status fluidtopics
The following result is expected:
● fluidtopics.service - Fluid Topics Web Server
...
Active: active (running) since mar. 2018-11-13 10:32:04 UTC; 3h 33min ago
...
The PID number is randomly assigned to an operation and does not have to match the documentation.
If the Fluid Topics web server is not running, use the following command:
As root user
systemctl start fluidtopics