Thanks @kobaltz Great series. I have a issue here. I've done everything right. I've double/triple checked everything. When I run pumad, I get the message promted as web application can be accessible in http://app-name.test and when I run sudo puma-dev -setup I get: Changing '/etc/resolver/test' to be owned by UserName. So when I get the message that application can be viewed in http://app-name.test or https://app-name.test, when I go there in my browser, its loading for a minute or so and then I get error: didn't find IP-address for app-name.test. any help is appreciated and thanks in advance!

Thanks for your reply @kolbaltz, first in the app directory I ran rm ~/.puma-dev/"$(basename `pwd`)" to remove it from puma-dev, so when I go to ~/.puma-dev I can't see any folders and then I ran pkill -USR1 puma-dev to kill everything and than I ran pumad to start it again, but same issue. Not sure what I did wrong at this point :/ Btw when I run which puma-dev I get this: /usr/local/bin/puma-dev Im in rails 5.1 full message when I ran pumad: * Use '/usr/local/Cellar/puma-dev/0.12/bin/puma-dev' as the location of puma-dev * Installed puma-dev on ports: http 80, https 443 Your app should be available at http://appname.test and https://appname.test now!

I ran tail -f ~/library/Logs/puma-dev.log and this is the output: * HTTPS Server port: inherited from launchd ! Puma dev listening on http and https and bunch of 2018/12/28 20:25:21 Error listening: accept tcp 0.0.0.0:0: accept: invalid argument * Directory for apps: /Users/UserName/.puma-dev * Domains: test * DNS Server port: 9253 * HTTP Server port: inherited from launchd * HTTPS Server port: inherited from launchd ! Puma dev listening on http and https 2018/12/28 20:25:31 Error listening: accept tcp 0.0.0.0:0: accept: invalid argument

[SOLVED] For future reference for others if they had same issue as me. My problem was that I had programs running on port 80, so I ran ** lsof -t -i :80** and saw the programs running there, after that I ran ** lsof -t -i :81** (or **lsof -t -i :YOUR-PORT**) to check if anything running there and it wasn't so I did **puma-dev -install -install-port 81** and that solved my issue. Another issue some Mac (chrome) user can face is the certificate issue. What I did was to drag the certificate to my desktop and than drag it to my keychain and allow everything, quite and restart chrome and my problem was solved. Thanks for great series @kobaltz

Hope someone can help out. I have my code exactly the same. Running ruby '2.3.0' and rail 5.2.2. When I go to my users.json path I get `undefined method '[]' for nil:NilClass` on: ` def sort_column columns[params[:order]['0'][:column].to_i] end ` and actually everything that uses the `params`. any help is much appreciated!