You might be trying to start your Rails server and getting something like the following, with no accompanying stack trace to tell you exactly what it is that’s gone wrong.
[10] Early termination of worker
[8] Early termination of worker
This is a note-to-self after encountering this when trying to upgrade a Rails app from Ruby 2.7 to 3.2. What helped me was a comment from this Stack Overflow post.
If rails s or bundle exec puma is telling you the workers are being terminated but not telling you why, try:
rackup config.ru
