CalculiX Advanced Environment is designed to guide you through the CalculiX keywords creation process and is aimed to help you reach the correct input file with no mistakes.
No, do not change cae.sh! It shouldn't point to source file. It points to binary executable!
If you're trying to run program from sources - run command "python3 cae.py" from "src" folder.
Another small issue, that I found was:
So I changed the src/cae in line 7 to cae.py, then it passes but gives the xlib problem
Originally posted by @cfernandesINEGI in https://github.com/calculix/cae/issues/8#issuecomment-641122795