No such file or directory Ubuntu Virtual Box

Hi, so I am following this guide to setup SITL/MAVProxy on a Linux VM. I am also using this for a plane while the video is using a copter. I can get to here: 19:20 before an error occurs saying:
<<<bash: cd: /home/zwadzinski/ardupilot/Ardoplane: No such file or directory.>>>

I’m assuming its because I am using a plane but have no idea. Also I am very new to this whole thing so dumbing it down may be a good idea. Any ideas on what to do? thanks

first clone the ardupilot repository from git and try these commands.

git clone
cd ardupilot
git submodule update --init --recursive

Thanks for the quick reply, it worked!