Capistrano/Puma : Unable to load application: ArgumentError: missing keyword: :root-CodePudding

Rails 6, Mysql, Ubuntu 20.04 I would like deploy with Capistrano Puma.

I have this error in my website :

We're sorry, but something went wrong.

If you are the application owner check the logs for more information.

Error into my log : puma.error.log :

/home/ubuntu/apps/appex/shared/bundle/ruby/3.0.0/gems/activestorage-
6.1.4.1/lib/active_storage/service/disk_service.rb:14:in `initialize': missing keyword: :root (ArgumentError)

  from /home/ubuntu/apps/appex/shared/bundle/ruby/3.0.0/gems/activestorage-6.1.4.1/lib/active_storage/service.rb:61:in `new'

Log Nginx : 2021/11/16 10:05:02 [crit] 3361147#3361147: *6 connect() to unix:///home/ubuntu/apps/appex/shared/tmp/sockets/appex-puma.sock failed (2: No such file or directory) while connecting to upstream, client

CodePudding user response：

That error comes from a misconfigured storage.yml in your environment. You are missing the root key.

For more information on how to set up ActiveStorage, read here.