Describe the bug

i try to run create_empty.py, the bug No module named 'omni.isaac' occurs
but the package omni has been installed

Steps to reproduce

when I run

 ./isaaclab.sh -p source/standalone/tutorials/00_sim/create_empty.py

python source/standalone/tutorials/00_sim/create_empty.py

the bug occurs:

Traceback (most recent call last):
  File "/home/ubuntu/Downloads/IsaacLab/source/standalone/tutorials/00_sim/create_empty.py", line 20, in <module>
    from omni.isaac.lab.app import AppLauncher
ModuleNotFoundError: No module named 'omni.isaac'

System Info

• Isaac Sim Version: 4.2.0
• OS: Ubuntu 20.04
• GPU: 4070ti super
• CUDA: 12.2
• GPU Driver: 535.171.04

My Isaac Sim is 4.2.0 installed from the Omniverse. I have done a Create Isaac Sim Symbolic Link according to the guide.
I have run ./isaaclab.sh --install