Stopping training

hello
for the first exercise, I did everything inside the context.
however, when I wanted to run and train it, it wont go further.
I put all the output of my terminal and you can see that it will remain at final line.

OUTPUT:
roslaunch my_cartpole_training start_training.launch
… logging to /home/introlab/.ros/log/f10c1c86-4405-11ec-8b6a-353588d470a2/roslaunch-IntroLab-59176.log
Checking log directory for disk usage. This may take a while.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

started roslaunch server http://IntroLab:44875/

SUMMARY

PARAMETERS

  • /cartpole_v0/alpha: 0.5
  • /cartpole_v0/control_type: velocity
  • /cartpole_v0/epsilon: 0.1
  • /cartpole_v0/epsilon_discount: 0.999
  • /cartpole_v0/gamma: 0.9
  • /cartpole_v0/init_pos: 0.0
  • /cartpole_v0/max_base_pose_x: 2.5
  • /cartpole_v0/max_base_velocity: 50
  • /cartpole_v0/max_pole_angle: 0.7
  • /cartpole_v0/min_base_pose_x: -2.5
  • /cartpole_v0/min_pole_angle: -0.7
  • /cartpole_v0/n_actions: 4
  • /cartpole_v0/nepisodes: 1000
  • /cartpole_v0/nsteps: 1000
  • /cartpole_v0/number_splits: 10
  • /cartpole_v0/pos_step: 0.016
  • /cartpole_v0/running_step: 0.04
  • /cartpole_v0/wait_time: 0.1
  • /rosdistro: noetic
  • /rosversion: 1.15.13

NODES
/
cartpole_gym (my_cartpole_training/start_training.py)

auto-starting new master
process[master]: started with pid [59199]
ROS_MASTER_URI=http://localhost:11311

setting /run_id to f10c1c86-4405-11ec-8b6a-353588d470a2
process[rosout-1]: started with pid [59224]
started core service [/rosout]
process[cartpole_gym-2]: started with pid [59231]


how can I solve it and see the results?

thanks a lot for your help

regards,
Pouyan