Facing error in getting vehicles from world

[lavish123409]

Hello everyone,

I am new to CARLA and Behavior Metrics. I am trying to run the beginners' script by $ python3 driver_carla.py -c configs/CARLA/default_carla.yml -g but it is not able to find the vehicles in the launch file(I am thinking). Because, I am constantly receiving 20: (controller_carla: 82): Waiting for vehicles! output.

On analyzing the daefault_carla.yml file, I found out that the world file which is being used is town_02_anticlockwise.launch. But, in that file, I am not able to find any vehicle other than our ego vehicle.

Is there any discrepancy with the file or something else that I am missing? Also, if someone can share the resources to understand all these terminologies, then it would be very helpful.

Thanks

[lavish123409]

On digging up the error, I found out that I am not able to run carla-ros-bridge because on running the testing script roslaunch carla_ros_bridge carla_ros_bridge.launch, I am receiving this error.

... logging to /home/carla-sim/.ros/log/bbb68f3c-f518-11ee-aad8-0242ac110002/roslaunch-cef764316090-3253.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://cef764316090:41235/

SUMMARY
========

PARAMETERS
 * /carla_ros_bridge/ego_vehicle_role_name: ["hero", "ego_veh...
 * /carla_ros_bridge/fixed_delta_seconds: 0.05
 * /carla_ros_bridge/host: localhost
 * /carla_ros_bridge/passive: False
 * /carla_ros_bridge/port: 2000
 * /carla_ros_bridge/register_all_sensors: True
 * /carla_ros_bridge/synchronous_mode: True
 * /carla_ros_bridge/synchronous_mode_wait_for_vehicle_control_command: False
 * /carla_ros_bridge/timeout: 2
 * /carla_ros_bridge/town: Town01
 * /rosdistro: noetic
 * /rosversion: 1.16.0
 * /use_sim_time: True

NODES
  /
    carla_ros_bridge (carla_ros_bridge/bridge.py)

auto-starting new master
process[master]: started with pid [3277]
ROS_MASTER_URI=http://localhost:11311

setting /run_id to bbb68f3c-f518-11ee-aad8-0242ac110002
process[rosout-1]: started with pid [3303]
started core service [/rosout]
process[carla_ros_bridge-2]: started with pid [3310]
Traceback (most recent call last):
  File "/root/carla-ros-bridge/catkin_ws/src/ros-bridge/carla_ros_bridge/src/carla_ros_bridge/bridge.py", line 24, in <module>
    import carla
  File "/opt/carla-simulator/PythonAPI/carla/dist/carla-0.9.15-py3.7-linux-x86_64.egg/carla/__init__.py", line 8, in <module>
    
  File "/opt/carla-simulator/PythonAPI/carla/dist/carla-0.9.15-py3.7-linux-x86_64.egg/carla/libcarla.py", line 9, in <module>
  File "/opt/carla-simulator/PythonAPI/carla/dist/carla-0.9.15-py3.7-linux-x86_64.egg/carla/libcarla.py", line 3, in __bootstrap__
ImportError: No module named util
================================================================================REQUIRED process [carla_ros_bridge-2] has died!
process has died [pid 3310, exit code 1, cmd /root/carla-ros-bridge/catkin_ws/src/ros-bridge/carla_ros_bridge/src/carla_ros_bridge/bridge.py __name:=carla_ros_bridge __log:=/home/carla-sim/.ros/log/bbb68f3c-f518-11ee-aad8-0242ac110002/carla_ros_bridge-2.log].
log file: /home/carla-sim/.ros/log/bbb68f3c-f518-11ee-aad8-0242ac110002/carla_ros_bridge-2*.log
Initiating shutdown!
================================================================================
[carla_ros_bridge-2] killing on exit
[rosout-1] killing on exit
[master] killing on exit
shutting down processing monitor...
... shutting down processing monitor complete
done

These are the content of /opt/carla-simulator/PythonAPI/carla/dist/carla-0.9.15-py3.7-linux-x86_64.egg/carla/libcarla.py file.

def __bootstrap__():
    global __bootstrap__, __loader__, __file__
    import sys, pkg_resources, importlib.util
    __file__ = pkg_resources.resource_filename(__name__, 'libcarla.cpython-37m-x86_64-linux-gnu.so')
    __loader__ = None; del __bootstrap__, __loader__
    spec = importlib.util.spec_from_file_location(__name__,__file__)
    mod = importlib.util.module_from_spec(spec)
    spec.loader.exec_module(mod)
__bootstrap__()

I searched it in the internet and found some answers which were for python2.7 version, but I am using python3.7.

/usr/bin/python3 -> /etc/alternatives/python3 -> /usr/bin/python3.7

If anyone can help me out in this, I would greatly appreciate it.

Thanks