Cant launch any demos from rmf_demos (#650)

Open-RMF Open-RMF General
1

Posted by @pranavk-2003:

Recently installed openrmf on ROS2 Jazzy and was facing issue while colcon build but solved it by replacing ign by gazebo in Cmakelist

COMMAND ros2 run rmf_building_map_tools building_map_generator gazebo {map_path} {ign_output_world_path} ${ign_output_model_dir}

I am trying to launch the hotel.launch.xml. rviz launches with the map i get this error .

pranav@pranav-vivobok:~/rmf_ws$ ros2 launch rmf_demos_gz hotel.launch.xml
[INFO] [launch]: All log files can be found below /home/pranav/.ros/log/2025-03-27-18-18-39-566281-pranav-vivobok-55804
[INFO] [launch]: Default logging verbosity is set to INFO
[ERROR] [ign-22]: exception occurred while executing process:
Traceback (most recent call last):
File “/opt/ros/jazzy/lib/python3.12/site-packages/launch/actions/execute_local.py”, line 569, in __execute_process
transport, self._subprocess_protocol = await async_execute_process(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “/opt/ros/jazzy/lib/python3.12/site-packages/osrf_pycommon/process_utils/async_execute_process_asyncio/impl.py”, line 139, in async_execute_process
transport, protocol = await _async_execute_process_nopty(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “/opt/ros/jazzy/lib/python3.12/site-packages/osrf_pycommon/process_utils/async_execute_process_asyncio/impl.py”, line 45, in _async_execute_process_nopty
transport, protocol = await loop.subprocess_exec(
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “/usr/lib/python3.12/asyncio/base_events.py”, line 1744, in subprocess_exec
transport = await self._make_subprocess_transport(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “/usr/lib/python3.12/asyncio/unix_events.py”, line 211, in _make_subprocess_transport
transp = _UnixSubprocessTransport(self, protocol, args, shell,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “/usr/lib/python3.12/asyncio/base_subprocess.py”, line 36, in init
self._start(args=args, shell=shell, stdin=stdin, stdout=stdout,
File “/usr/lib/python3.12/asyncio/unix_events.py”, line 820, in _start
self._proc = subprocess.Popen(
^^^^^^^^^^^^^^^^^
File “/usr/lib/python3.12/subprocess.py”, line 1026, in init
self._execute_child(args, executable, preexec_fn, close_fds,
File “/usr/lib/python3.12/subprocess.py”, line 1955, in _execute_child
raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: ‘ign’

[ERROR] [launch]: Caught exception in launch (see debug for traceback): “package ‘ros_ign_bridge’ not found, searching: [‘/home/pranav/rmf_ws/install/rmf_demos_gz_classic’, ‘/home/pranav/rmf_ws/install/rmf_demos_gz’, ‘/home/pranav/rmf_ws/install/rmf_demos’, ‘/home/pranav/rmf_ws/install/rmf_demos_tasks’, ‘/home/pranav/rmf_ws/install/rmf_demos_panel’, ‘/home/pranav/rmf_ws/install/rmf_demos_maps’, ‘/home/pranav/rmf_ws/install/rmf_demos_fleet_adapter’, ‘/home/pranav/rmf_ws/install/rmf_demos_dashboard_resources’, ‘/home/pranav/rmf_ws/install/rmf_demos_bridges’, ‘/home/pranav/rmf_ws/install/rmf_demos_assets’, ‘/opt/ros/jazzy’]”

surely i am missing something.

2

Posted by @aaronchongth:

I’m not too sure where you got that command from, as you can see that the CMakeLists.txt upstream uses this command instead, rmf_demos/rmf_demos_maps/CMakeLists.txt at jazzy · open-rmf/rmf_demos · GitHub, which should have no issues. May I know what branches you are using? My guess is that your workspace was built with past branches, and you checked out newer branches and tries to only rebuild some of them instead of the whole workspace. Try to delete the build and install directories and rebuild your workspace again.

3

Posted by @pranavk-2003:

Solved this issue , but i’m not sure about the cause . i faced this issue multiple times after i git cloned the main branch.I did try downloading the zip and then building the ws, and everything worked as normal.