What is the reason of using this version? The version you have picked is d2 (development version 2, Aug last year), which was followed by d3 (Oct last year), d4 ... b1 (4 months ago) ... and now we are at b3 (using Bootstrap 5.3.2 which is still the most recent released version of Bootstrap). This is the version of the package is the one to be released in the forthcoming release of OpenACS.
On my machine, the current version works with the installation from CDN and also with the downloaded variant.
Some of the download sources are moving targets, they do not provide a stable structure along versions.
