Okay,

When I ran brew install berkelely-db@4, this was the output.


Error: No available formula with the name "berkelely-db@4"
==> Searching for a previously deleted formula...
Warning: homebrew/core is shallow clone. To get complete history run:
  git -C "$(brew --repo homebrew/core)" fetch --unshallow

Error: No previously deleted formula found.
==> Searching for similarly named formulae...
==> Searching local taps...
Error: No similarly named formulae found.
==> Searching taps...
==> Searching taps on GitHub...
Error: No formulae found in taps.


...
Of course launching PandaBank produces the exact same results.

We're getting there, lol!