Difficulty Installing Source Code

Hi all,

First forum post so please excuse any faux pas. I’m trying to install source code on my Raspberry pi 3B for the ReSpeaker 4 mic array, using this documentation ReSpeaker 4-Mic Array for Raspberry Pi | Seeed Studio Wiki

When I run
sudo ./install.sh
I get this message:

On reboot, after confirming ‘yes’, I get a popup on the top right of my screen which says

" Failed to laod overlay ‘i2s-mmap’ "

I can’t use the microphones as stated in documentation after these errors.

Any ideas what could be going wrong?

Do you run the latest Raspberry Pi OS(Raspberry Pi OS – Raspberry Pi) on your Pi. (updated at 2021.06.30)?