AttributeError Occurs When Running interactive_drone.py

[LeeJaeJin00]

I was working on the Genesis examples in a Conda virtual environment using Python 3.10.16 on Ubuntu 24.04.2 LTS.
I'm trying to run example/drone/interactive_drone.py by following a YouTube tutorial.
The YouTuber used commit f676307, and everything worked fine.
However, when I try to run it on the latest main branch (commit 98b29b4), I get the following error

AttributeError: 'Viewer' object has no attribute 'follow_entity'

How can I fix this issue?