No module named setuptools.config

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Hello, I tried to follow the instructions to install ROS2 using colcon and I get the following error (even though the build continue and pass):

[0.639s] ERROR:colcon.colcon_core.entry_point:Exception loading extension 'colcon_core.package_identification.python': No module named 'setuptools.config' Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/colcon_core/entry_point.py", line 98, in load_entry_points extension_type = load_entry_point(entry_point) File "/usr/lib/python3/dist-packages/colcon_core/entry_point.py", line 140, in load_entry_point return entry_point.load() File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2229, in load return self.resolve() File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2235, in resolve module = __import__(self.module_name, fromlist=['__name__'], level=0) File "/usr/lib/python3/dist-packages/colcon_core/package_identification/python.py", line 10, in <module> from setuptools.config import read_configuration ImportError: No module named 'setuptools.config'

With the following command:

colcon build --symlink-install

I am running on Ubuntu 16.04 and followed this link https://github.com/ros2/ros2/wiki/Lin... Do I need to specify something to remove this error ? Thanks