You'll likely have to run camera_server.py using the same ini file first before you can use the client. Since the pylon installation is not on the shared drive but only local to optimus at the moment you would have to do it from there. You'll need to add /opt/pylon5/lib64/ to LD_LIBRARY_PATH or it won't find some required libraries. I couldn't start up the server all the way, probably because we need to define some slow EPICS channels before running the server script, as Joe points out in his document T1300202. You'll find instructions how to do that for example in this elog.