Problems("no module named 'isaacsim', 'omni.isaac'....") I encountered when trying to configure Isaac Sim with conda

Hi, this is my first time to use Isaacsim (on Ubuntu 22.04.4 LTS), and I followed the steps written on the docs:

  1. downloaded omniverse-launcher, then installed the Isaac Sim 4.0.0 (I also tried 2023.1.1)
  2. create a new conda environment by environment.yml and activate it
  3. use command: source setup_conda_env.sh (I also tried using chmod +x ./setup_conda_env.sh)

After that, I tried to import isaacsim and omni.xxxx in pycharm (also in shell) but failed. However, I can find them in the folder. So I’m wondering if I didn’t locate python packages successfully, but I really don’t know how to solve it.

Thank you for your time!