Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/colcon_core/executor/__init__.py", line 91, in __call__
    rc = await self.task(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/colcon_core/task/__init__.py", line 93, in __call__
    return await task_method(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/colcon_ros/task/ament_python/build.py", line 54, in build
    data_files = get_data_files_mapping(
  File "/usr/lib/python3/dist-packages/colcon_core/task/python/__init__.py", line 40, in get_data_files_mapping
    assert isinstance(sources, list)
AssertionError
