Problem with listner(srv)

[Spider1097]

I am studying how to program Techman , and I come from University of technology(Poland).
My problem is listener, and it happened in Ubuntu 20.04, ROS Noetic.

I am trying control Techman with code, using this tutorial "https://github.com/TechmanRobotInc/tmr_ros1/tree/noetic" and "https://github.com/jvdtoorn/techmanpy". I can just say to robot there hi must go, but i can not get any callback from robot.
I have that communicate:

always sending me "reconnecting", how i can fix this?

and other communication from code:

It hapend when a techman come from one of my science club event.

[harshit3045]

In the techmanpy library, one of the SVR files has a 'PORT' variable which is set to 5891. Set it to 5890 and the SVR would come online.