Cookbook chapters and sections unaccessible from left sidebar

[erogluorhan]

What happened:

The chapters are not clickable and do not list the sections under them on the left side navigation except Preamble.

What you expected to happen:

Chapters listing sections and those sections being accessible by clicking on them.

Environment:
Chrome desktop browser

[erogluorhan]

@jukent, just a heads up, looks like myst.yml is populated from a pretty old version of _toc.yml for this cookbook, and I will handle it, but you may want to make sure a similar thing did not happen in other cookbooks.