Can't run the installation code

[johnperry-math]

I get the following error when I try to run index.py:

$ ./index.py
resolve_references prefix=/Users/user/cocalc-examples/cocalc-example-files
Traceback (most recent call last):
File "/Users/user/cocalc-examples/./index.py", line 138, in
main(index_fn='index.yaml')
File "/Users/user/cocalc-examples/./index.py", line 130, in main
resolve_references(meta, docs, prefix=ROOT)
File "/Users/user/cocalc-examples/./index.py", line 58, in resolve_references
new_meta, *new_docs = yaml.load_all(open(ref), Loader=yaml.SafeLoader)
FileNotFoundError: [Errno 2] No such file or directory: 'cocalc-example-files/index.yaml'

Any suggestions? I'm running on macOS Catalina with Python 3.9, if it matters.

(There is in fact no such file in that directory.)

[johnperry-math]

See instructions on fixing this in #12