PIL related Issue in enabling ros2 bridge

[ayaancdry]

Good Evening Team,
I am encountering an issue & I was hoping I could get a solution for it. My isaacsim-5.0 installation & native ros-humble installation on my ubuntu 22.04 is perfect. However, when I start isaac-sim through selector (enabling the ros2 bridge), the bridge isn't getting enabled. If i go to the extensions window inside isaac-sim & try to enable it, then also it's not getting enabled with this error saying :

The error(s) being shown are as follows :

2025-07-25T09:57:45Z [9,166ms] [Error] [omni.ext._impl.custom_importer] Failed to import python module isaacsim.ros2.bridge. Error: No module named 'PIL'. Traceback:
Traceback (most recent call last):
  File "/home/ayaan/.cache/packman/chk/kit-kernel/107.3.0+feature.199947.b0a86421.gl.manylinux_2_35_x86_64.release/kernel/py/omni/ext/_impl/custom_importer.py", line 85, in import_module
    return importlib.import_module(name)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ayaan/.cache/packman/chk/kit-kernel/107.3.0+feature.199947.b0a86421.gl.manylinux_2_35_x86_64.release/python/lib/python3.11/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1204, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 940, in exec_module
  File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  File "/home/ayaan/project/isaac/IsaacSim/_build/linux-x86_64/release/exts/isaacsim.ros2.bridge/isaacsim/ros2/bridge/__init__.py", line 16, in <module>
    from .impl.camera_info_utils import *
  File "/home/ayaan/project/isaac/IsaacSim/_build/linux-x86_64/release/exts/isaacsim.ros2.bridge/isaacsim/ros2/bridge/impl/camera_info_utils.py", line 22, in <module>
    import omni.syntheticdata
  File "/home/ayaan/project/isaac/IsaacSim/_build/linux-x86_64/release/extscache/omni.syntheticdata-0.6.13+b0a86421.lx64.r.cp311/omni/syntheticdata/__init__.py", line 2, in <module>
    from .scripts.extension import *
  File "/home/ayaan/project/isaac/IsaacSim/_build/linux-x86_64/release/extscache/omni.syntheticdata-0.6.13+b0a86421.lx64.r.cp311/omni/syntheticdata/scripts/extension.py", line 11, in <module>
    from . import visualize
  File "/home/ayaan/project/isaac/IsaacSim/_build/linux-x86_64/release/extscache/omni.syntheticdata-0.6.13+b0a86421.lx64.r.cp311/omni/syntheticdata/scripts/visualize.py", line 6, in <module>
    from PIL import Image, ImageDraw
ModuleNotFoundError: No module named 'PIL'

2025-07-25T09:57:45Z [9,166ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'isaacsim.ros2.bridge' in '/home/ayaan/project/isaac/IsaacSim/_build/linux-x86_64/release/exts/isaacsim.ros2.bridge' failed to load.

At:
  /home/ayaan/.cache/packman/chk/kit-kernel/107.3.0+feature.199947.b0a86421.gl.manylinux_2_35_x86_64.release/kernel/py/omni/ext/_impl/_internal.py(222): startup
  /home/ayaan/.cache/packman/chk/kit-kernel/107.3.0+feature.199947.b0a86421.gl.manylinux_2_35_x86_64.release/kernel/py/omni/ext/_impl/_internal.py(337): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/ayaan/project/isaac/IsaacSim/_build/linux-x86_64/release/exts/isaacsim.app.setup/isaacsim/app/setup/extension.py(306): __enable_ros_bridge
  /home/ayaan/.cache/packman/chk/kit-kernel/107.3.0+feature.199947.b0a86421.gl.manylinux_2_35_x86_64.release/python/lib/python3.11/asyncio/events.py(84): _run
  /home/ayaan/.cache/packman/chk/kit-kernel/107.3.0+feature.199947.b0a86421.gl.manylinux_2_35_x86_64.release/python/lib/python3.11/asyncio/base_events.py(1936): _run_once
  /home/ayaan/.cache/packman/chk/kit-kernel/107.3.0+feature.199947.b0a86421.gl.manylinux_2_35_x86_64.release/extscore/omni.kit.async_engine/omni/kit/async_engine/async_engine.py(198): run_once
  /home/ayaan/.cache/packman/chk/kit-kernel/107.3.0+feature.199947.b0a86421.gl.manylinux_2_35_x86_64.release/extscore/omni.kit.async_engine/omni/kit/async_engine/async_engine.py(266): <lambda>

2025-07-25T09:57:45Z [9,166ms] [Error] [omni.ext.plugin] [ext: isaacsim.ros2.bridge-4.8.3] Failed to startup python extension.

A lot of other issues are also coming (related to PIL installation failure only). For example :

2025-07-25T09:57:44Z [8,465ms] [Error] [omni.kit.app._impl] [py stderr]: Exception in thread Thread-1 (cache_imports):
2025-07-25T09:57:44Z [8,465ms] [Error] [omni.kit.app._impl] [py stderr]: Traceback (most recent call last):
2025-07-25T09:57:44Z [8,465ms] [Error] [omni.kit.app._impl] [py stderr]:   File "/home/ayaan/.cache/packman/chk/kit-kernel/107.3.0+feature.199947.b0a86421.gl.manylinux_2_35_x86_64.release/python/lib/python3.11/threading.py", line 1045, in _bootstrap_inner
2025-07-25T09:57:44Z [8,465ms] [Error] [omni.kit.app._impl] [py stderr]:     self.run()
2025-07-25T09:57:44Z [8,465ms] [Error] [omni.kit.app._impl] [py stderr]:   File "/home/ayaan/.cache/packman/chk/kit-kernel/107.3.0+feature.199947.b0a86421.gl.manylinux_2_35_x86_64.release/python/lib/python3.11/threading.py", line 982, in run
2025-07-25T09:57:44Z [8,465ms] [Error] [omni.kit.app._impl] [py stderr]:     self._target(*self._args, **self._kwargs)
2025-07-25T09:57:44Z [8,465ms] [Error] [omni.kit.app._impl] [py stderr]:   File "/home/ayaan/project/isaac/IsaacSim/_build/linux-x86_64/release/extscache/omni.importer.onshape-1.0.0+107.3.0/omni/importer/onshape/scripts/extension.py", line 39, in cache_imports
2025-07-25T09:57:44Z [8,465ms] [Error] [omni.kit.app._impl] [py stderr]:     from ..widgets.content_widget import OnshapeContentWidget
2025-07-25T09:57:44Z [8,466ms] [Error] [omni.kit.app._impl] [py stderr]:   File "/home/ayaan/project/isaac/IsaacSim/_build/linux-x86_64/release/extscache/omni.importer.onshape-1.0.0+107.3.0/omni/importer/onshape/widgets/content_widget.py", line 18, in <module>
2025-07-25T09:57:44Z [8,466ms] [Error] [omni.kit.app._impl] [py stderr]:     from omni.importer.onshape.widgets.documents_widget import *
2025-07-25T09:57:44Z [8,466ms] [Error] [omni.kit.app._impl] [py stderr]:   File "/home/ayaan/project/isaac/IsaacSim/_build/linux-x86_64/release/extscache/omni.importer.onshape-1.0.0+107.3.0/omni/importer/onshape/widgets/documents_widget.py", line 27, in <module>
2025-07-25T09:57:44Z [8,466ms] [Error] [omni.kit.app._impl] [py stderr]:     from omni.importer.onshape.widgets.elements_widget import (
2025-07-25T09:57:44Z [8,466ms] [Error] [omni.kit.app._impl] [py stderr]:   File "/home/ayaan/project/isaac/IsaacSim/_build/linux-x86_64/release/extscache/omni.importer.onshape-1.0.0+107.3.0/omni/importer/onshape/widgets/elements_widget.py", line 26, in <module>
2025-07-25T09:57:44Z [8,466ms] [Error] [omni.kit.app._impl] [py stderr]:     from PIL import Image, ImageChops
2025-07-25T09:57:44Z [8,466ms] [Error] [omni.kit.app._impl] [py stderr]: ModuleNotFoundError: No module named 'PIL'

and :

2025-07-25T09:57:44Z [8,744ms] [Error] [omni.ext._impl.custom_importer] Failed to import python module isaacsim.util.camera_inspector. Error: No module named 'PIL'. Traceback:
Traceback (most recent call last):
  File "/home/ayaan/.cache/packman/chk/kit-kernel/107.3.0+feature.199947.b0a86421.gl.manylinux_2_35_x86_64.release/kernel/py/omni/ext/_impl/custom_importer.py", line 85, in import_module
    return importlib.import_module(name)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ayaan/.cache/packman/chk/kit-kernel/107.3.0+feature.199947.b0a86421.gl.manylinux_2_35_x86_64.release/python/lib/python3.11/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1204, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 940, in exec_module
  File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  File "/home/ayaan/project/isaac/IsaacSim/_build/linux-x86_64/release/exts/isaacsim.util.camera_inspector/isaacsim/util/camera_inspector/__init__.py", line 16, in <module>
    from .extension import *
  File "/home/ayaan/project/isaac/IsaacSim/_build/linux-x86_64/release/exts/isaacsim.util.camera_inspector/isaacsim/util/camera_inspector/extension.py", line 39, in <module>
    from isaacsim.sensors.camera import get_all_camera_objects
  File "/home/ayaan/project/isaac/IsaacSim/_build/linux-x86_64/release/exts/isaacsim.sensors.camera/isaacsim/sensors/camera/__init__.py", line 16, in <module>
    from .camera import *
  File "/home/ayaan/project/isaac/IsaacSim/_build/linux-x86_64/release/exts/isaacsim.sensors.camera/isaacsim/sensors/camera/camera.py", line 28, in <module>
    import omni.replicator.core as rep
  File "/home/ayaan/project/isaac/IsaacSim/_build/linux-x86_64/release/extscache/omni.replicator.core-1.12.10+107.3.0.lx64.r.cp311/omni/replicator/core/__init__.py", line 3, in <module>
    from .scripts import (
  File "/home/ayaan/project/isaac/IsaacSim/_build/linux-x86_64/release/extscache/omni.replicator.core-1.12.10+107.3.0.lx64.r.cp311/omni/replicator/core/scripts/__init__.py", line 3, in <module>
    from . import (
  File "/home/ayaan/project/isaac/IsaacSim/_build/linux-x86_64/release/extscache/omni.replicator.core-1.12.10+107.3.0.lx64.r.cp311/omni/replicator/core/scripts/annotators.py", line 29, in <module>
    from omni.syntheticdata import SyntheticData, SyntheticDataStage
  File "/home/ayaan/project/isaac/IsaacSim/_build/linux-x86_64/release/extscache/omni.syntheticdata-0.6.13+b0a86421.lx64.r.cp311/omni/syntheticdata/__init__.py", line 2, in <module>
    from .scripts.extension import *
  File "/home/ayaan/project/isaac/IsaacSim/_build/linux-x86_64/release/extscache/omni.syntheticdata-0.6.13+b0a86421.lx64.r.cp311/omni/syntheticdata/scripts/extension.py", line 11, in <module>
    from . import visualize
  File "/home/ayaan/project/isaac/IsaacSim/_build/linux-x86_64/release/extscache/omni.syntheticdata-0.6.13+b0a86421.lx64.r.cp311/omni/syntheticdata/scripts/visualize.py", line 6, in <module>
    from PIL import Image, ImageDraw
ModuleNotFoundError: No module named 'PIL'

KIndly guide on what's the correct procedure to fix these issues.
Thank You!

[vick-yu]

To check if Pillow is installed, you can run the following command in your terminal (via "Open in Terminal" menu):

$ ./python.sh -m pip show Pillow