DevAcademy Lesson 3 Exercise 2

I'm working through the nRF Connect Academy tutorials and I just came to the point where I create an app from scratch.

I'm using the nRF52832 DK board and it's working for the basic Hello World test.

However, when I try to build for Lesson 3 Exercise 2, I get the following error: FATAL ERROR: command exited with status 1: 'c:\ncs\toolchains\v2.2.0-rc1\opt\bin\cmake.EXE' --build 'c:\Nordic\Academy\nRF-Connect-SDK-Fundamentals\v2.x.x\lesson3\fund_less3_exer1\build'

I tried building the exercise solution and it builds. I tried copying the src files and CMakeList.txt file from the solution into my exercise project and the build still fails. Besides the src and CMakeList, what other files could be different between my exercise project and the solution?

I'm using SDK v2.x.x on Windows 11.