Error when compiling Linux using Angstrom

i am new user and trying to build kernel and compile using the instructions on for cycloneV soc on 18.1. I was able to complete all the steps apart from the last step which is bitbake gsrd-console-image. I get an error saying the folder $local/mnt/workspace/angstrom-build/layers/meta-altera-refdes does not exist when it actually does. i can see the folder and navigate to it as well. I am really new to all of this and struggling with this and not sure how to go forward. this is for cyclone v devkit. I would greatly appreciate any assistance that i get in regard to this.

thank you !