TypeError: Module name, 'popper' does not resolve to a valid URL

[antoniomnds]

Having followed the setup instructions in the README, this error message appears in the browser console when loading each page: TypeError: Module name, 'popper' does not resolve to a valid URL.
Didn't found a similar issue in the repo.

Current setup is:
Rails 7.2.1
gem bootstrap 5.3.3

In the import map I've used:
pin "@popperjs/core", to: "popper.js", preload: true

I've seen in a gist another configuration that seems to solve the issue:
pin "popper", to: 'popper.js', preload: true

If this is reproducible in other envs, perhaps the README should be updated to include this configuration.