No module named 'rospkg.os_detect'

[wqqhao123]

Ubuntu20.04
wget -c https://raw.githubusercontent.com/qboticslabs/ros_install_noetic/master/ros_install_noetic.sh && chmod +x ./ros_install_noetic.sh && ./ros_install_noetic.sh
####################################################

{Step 6: Setting ROS Environment, This will add ROS environment to .bashrc.}
{ After adding this, you can able to access ROS commands in terminal}

Reading package lists... Done
Building dependency tree
Reading state information... Done
python3-rosinstall is already the newest version (0.7.8-4).
python3-wstool is already the newest version (0.1.18-2).
build-essential is already the newest version (12.8ubuntu1.1).
python3-rosdep is already the newest version (0.22.2-1).
python3-rosinstall-generator is already the newest version (0.1.23-1).
0 upgraded, 0 newly installed, 0 to remove and 182 not upgraded.
Traceback (most recent call last):
File "/usr/bin/rosdep", line 33, in
sys.exit(load_entry_point('rosdep==0.22.2', 'console_scripts', 'rosdep')())
File "/usr/bin/rosdep", line 25, in importlib_load_entry_point
return next(matches).load()
File "/usr/lib/python3.8/importlib/metadata.py", line 77, in load
module = import_module(match.group('module'))
File "/usr/lib/python3.8/importlib/init.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 1014, in _gcd_import
File "", line 991, in _find_and_load
File "", line 961, in _find_and_load_unlocked
File "", line 219, in _call_with_frames_removed
File "", line 1014, in _gcd_import
File "", line 991, in _find_and_load
File "", line 975, in _find_and_load_unlocked
File "", line 671, in _load_unlocked
File "", line 848, in exec_module
File "", line 219, in _call_with_frames_removed
File "/usr/lib/python3/dist-packages/rosdep2/init.py", line 40, in
from .installers import InstallerContext, Installer,
File "/usr/lib/python3/dist-packages/rosdep2/installers.py", line 36, in
from rospkg.os_detect import OsDetect
ModuleNotFoundError: No module named 'rospkg.os_detect'