if you cd into depot_pb and try to get it running its not really clear what your supposed to do at that point. I assumed that I needed to do the following to catch up state for webpacker
rails webpacker:install rails webpacker:install:react
when I did that, it complained that there were already files in the config directory webpack and webpacker.yml
so, I removed them, and things seemed to work at that point correctly.
maybe those should be removed from the depot_pb in the tar?