Execute Python Script using python plugin

Hello @nakaoka -san, I am able to build the python plugin along with Choreonoid. I can test the plugin by executing the simple hello_world.py file which seems to be working fine. However, when I try to run one of the python files from sample dir. I am facing import issues. Snapshot below for reference.

Message that I see on Chorenoid -

What is “test_controller.py”?

test_controller.py is a Python file that I am writing to develop a custom controller/simulator in Choreonoid.