pg.rb segmentation fault [Mojave upgrade]

As this issue is only occuring in the development environment, I made it conditional. This solution in puma.rb works for me until the bug gets fixed.

workers ENV.fetch("WEB_CONCURRENCY") { 2 } unless Rails.env.development?

in .env file set WEB_CONCURRENCY=0 and you do not need to add any logic in config/puma.rb