How to fix Rails's warning messages with Ruby 2.7.0
问题 Did anyone resolve this issue with Ruby 2.7.0 ? I used rbenv and installed Ruby v2.7.0 and then created a Rails project using Rails v6.0.2.1 . Currently, by running one of rails s rails s -u puma rails s -u webrick the server is up and the site is served but in the Console log I see two warning messages: local:~/rcode/rb27$ rails s => Booting Puma => Rails 6.0.2.1 application starting in development => Run `rails server --help` for more startup options .rbenv/versions/2.7.0/lib/ruby/gems/2.7