run.launch error occurr

[viorinus]

Hello @ravijo,

I've encountered a similar issue to @SM30000.

When I run：roslaunch ros_openpose run.launch
I get the following error:

[visualizer-2] process has died [pid 38959, exit code 1, cmd /home/r/openpose/src/ros_openpose/scripts/visualizer.py __name:=visualizer __log:=/home/r/.ros/log/b300b026-734d-11ef-ba19-e954e920a64d/visualizer-2.log].
log file: /home/r/.ros/log/b300b026-734d-11ef-ba19-e954e920a64d/visualizer-2*.log
================================================================================REQUIRED process [echo-3] has died!
process has died [pid 38960, exit code 1, cmd /home/r/openpose/src/ros_openpose/scripts/echo.py __name:=echo __log:=/home/r/.ros/log/b300b026-734d-11ef-ba19-e954e920a64d/echo-3.log].
log file: /home/r/.ros/log/b300b026-734d-11ef-ba19-e954e920a64d/echo-3*.log
Initiating shutdown!
================================================================================

However, when I run: roslaunch ros_openpose run.launch camera:=realsense skeleton:=false print:=false

it works fine, and the Color topic Depth topic Camera Info. topic are printing messages as expected.

But I'm still unable to run visualizer.pyor echo.py. Even after changing the shebang to #!/usr/bin/env python3 and running them directly with python3 src/ros_openpose/scripts/visualizer.py, I encounter the following error:

Traceback (most recent call last):
  File "src/ros_openpose/scripts/visualizer.py", line 200, in <module>
    frame_topic = rospy.get_param('~pub_topic')
  File "/opt/ros/noetic/lib/python3/dist-packages/rospy/client.py", line 467, in get_param
    return _param_server[param_name] #MasterProxy does all the magic for us
  File "/opt/ros/noetic/lib/python3/dist-packages/rospy/msproxy.py", line 123, in __getitem__
    raise KeyError(key)
KeyError: '~pub_topic'

I'm running on Ubuntu 20.04 with ROS Noetic, OpenPose 1.6, CUDA 12.6, and cuDNN 9.Could you please guide me on how to resolve this issue?

[ravijo]

@viorinus

It seems that the script is unable to find pub_topic argument because you are running them directly instead of using rosrun. The visualizer.py and echo.py requires some ROS parameters to run. Please do not invoke them directly with python.

BTW, make sure these scripts are executable as mentioned at point 3 in installation

[viorinus]

Hello @ravijo,

Thank you for your prompt response.

The scripts are executable, and when I attempt to run rosrun ros_openpose visualizer.py, I encounter the following error:

Traceback (most recent call last):
File "/home/r/openpose/src/ros_openpose/scripts/visualizer.py", line 10, in
import rospy
File "/opt/ros/noetic/lib/python3/dist-packages/rospy/init.py", line 47, in
from std_msgs.msg import Header
File "/opt/ros/noetic/lib/python3/dist-packages/std_msgs/msg/init.py", line 1, in
from ._Bool import *
File "/opt/ros/noetic/lib/python3/dist-packages/std_msgs/msg/_Bool.py", line 6, in
import genpy
File "/opt/ros/noetic/lib/python3/dist-packages/genpy/init.py", line 34, in
from . message import Message, SerializationError, DeserializationError, MessageException, struct_I
File "/opt/ros/noetic/lib/python3/dist-packages/genpy/message.py", line 48, in
import yaml
ImportError: No module named yaml

Initially, I thought this issue might be due to a Python version conflict in my system, so I omitted the related description. Could you please let me know if my understanding is correct?

[ravijo]

@viorinus

It seems a problem with your ROS installtion. Either you are running on incorrect python version or ROS isn't installed properly.

[viorinus]

Thank you for your response. I will try to install the correct version of Python first, and I will report back on my progress soon!

[viorinus]

@ravijo

I've tried setting up a Python 3.8 virtual environment to run my code,

(python38) r@r:~/openpose$ python3 -V
Python 3.8.19

but it's still throwing errors.

Traceback (most recent call last):
File "/home/r/openpose/src/ros_openpose/scripts/visualizer.py", line 10, in
import rospy
File "/opt/ros/noetic/lib/python3/dist-packages/rospy/init.py", line 47, in
from std_msgs.msg import Header
File "/opt/ros/noetic/lib/python3/dist-packages/std_msgs/msg/init.py", line 1, in
from ._Bool import *
File "/opt/ros/noetic/lib/python3/dist-packages/std_msgs/msg/_Bool.py", line 6, in
import genpy
File "/opt/ros/noetic/lib/python3/dist-packages/genpy/init.py", line 34, in
from . message import Message, SerializationError, DeserializationError, MessageException, struct_I
File "/opt/ros/noetic/lib/python3/dist-packages/genpy/message.py", line 48, in
import yaml
ImportError: No module named yaml

When I ran the conda list command, I can see that yaml and pyyaml are indeed installed.

I try to reinstalling yaml, and I got :

(python38) r@r:~$ pip install pyyaml
Requirement already satisfied: pyyaml in ./.conda/envs/python38/lib/python3.8/site-packages (6.0.1)

I attempted to install pyyaml in the error path:

(python38) r@r:~$ sudo pip install --target=/opt/ros/noetic/lib/python3/dist-packages pyyaml
Collecting pyyaml
  Downloading PyYAML-6.0.2-cp38-cp38-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (746 kB)
     |████████████████████████████████| 746 kB 190 kB/s 
Installing collected packages: pyyaml
Successfully installed pyyaml-6.0.2

but then it started giving me a new error:

Traceback (most recent call last):
  File "/home/r/openpose/src/ros_openpose/scripts/visualizer.py", line 10, in <module>
    import rospy
  File "/opt/ros/noetic/lib/python3/dist-packages/rospy/__init__.py", line 47, in <module>
    from std_msgs.msg import Header
  File "/opt/ros/noetic/lib/python3/dist-packages/std_msgs/msg/__init__.py", line 1, in <module>
    from ._Bool import *
  File "/opt/ros/noetic/lib/python3/dist-packages/std_msgs/msg/_Bool.py", line 6, in <module>
    import genpy
  File "/opt/ros/noetic/lib/python3/dist-packages/genpy/__init__.py", line 34, in <module>
    from . message import Message, SerializationError, DeserializationError, MessageException, struct_I
  File "/opt/ros/noetic/lib/python3/dist-packages/genpy/message.py", line 48, in <module>
    import yaml
  File "/opt/ros/noetic/lib/python3/dist-packages/yaml/__init__.py", line 362
    class YAMLObject(metaclass=YAMLObjectMetaclass):
                                                   ^
SyntaxError: invalid syntax

Is there any good solution to this? Should I consider reinstalling my system and work environment? Thanks.