Hello Everyone,
I'd you to close this open un-answered issue.
This problem is resolved, I did a fresh installation of IDF-Toolsuite V3.3 and added ESP-ADF V2.3, the build was successful. however the demo does works with absurd audio output... trying to resolve.. Thank You

Hello, I am using ESP-ADF - 2.3, ESP-IDF - 3.3, as stated in the link - https://github.com/espressif/esp-adf/tree/master/examples I have followed the steps to set up environment variables and executed idf.py menuconfig to change the board to ESP32-LyraTD-MSC. I tried to build the project but failed....