Trouble with python nodes in launchfile

edit

Hi everyone!

I am trying to start some additional nodes together with the minimal.launch file, so I made the following additions for my nodes.

I sourced the devel/setup.bash file so the package can be found and made sure the py files are executable using chmod +x. Nonetheless, when I try to run the launch file, I get the following errors. It does seem quite generic to me, has someone experienced this before and has an idea?

Thank you!

The lines I added:

  <node name="webcam_pub" pkg="webcam_pub" type="webcam_pub.py" />
  <node name="pos_pub" pkg="stop_snap" type="pos_pub.py" />
  <node name="go_to_goal_v5" pkg="stop_snap" type="go_to_goal_v5.py" />

What I get as output in the console (log files are empty).

process[webcam_pub-14]: started with pid [6036]
: No such file or directory
failed to start local process: /home/turtlebot/library_ws/src/stop_snap/src/pos$
local launch of stop_snap/pos_pub.py failed
[pos_pub-15] process has died [pid -1, exit code 127, cmd /home/turtlebot/libra$
log file: /home/turtlebot/.ros/log/69123a30-181f-11e6-bce9-54353050d249/pos_pub$
process[go_to_goal_v5-16]: started with pid [6061]