Address already in use port 3000

`initialize': Address already in use - bind(2) for "127.0.0.1" port 3000 (Errno::EADDRINUSE)


lsof -wni tcp:3000

List

1. yarn add on bash ...... #webpacker (1) #scss (1) #sass (1) #css (1) #rails (42)

RAILS_ENV=production...... #production (1) #deploy (3) #rake (4) #rails (42)

$ gem install mime-t...... #content-type (1) #ruby (17) #rails (42)

CloudinaryException ...... #heroku (3) #cloudinary (1) #rails (42)

[CZGHPChUAAA3jqE.png...... #crop (1) #rails (42)

lsof -wni tcp:3000Th...... #macos (3) #rails (42)

FROM ruby:2.6.1 RUN...... #dockerfile (3) #rails (42)

Case 1. [74118] - Wo...... #rails (42)

August 18, 2019 Rail...... #rails (42)

Turn off old_logger ...... #console (1) #log (1) #rails (42)

Hello World