After installing'devise''bootstrap' of gemfile with rails, what to do when url is an error

Origin environment

・ MacOS Catalina 10.15.7

・ Ruby 2.6.6

・ Rails 5.1.6

After the rails tutorial is over, I will make a note of how to resolve the error when I started creating the original application for the first time.

Add the following to the gemfile and add bundle install gem 'devise' gem 'bootstrap', '~> 4.4.1' gem 'devise-bootstrap-views', '~> 1.0'

Check / users / sign_up from rails routes. http://localhost:3000/users/sign_up Error when searching スクリーンショット 2020-10-30 13.13.22.png Even if I delete @import "bootstrap-sprockets"; ↓ image.png I tried changing the gemfile and it didn't change.

How to solve It was simple. All I had to do was restart the server. In case of changing config or js other than view file and controller, it seems that it is often cured by restarting.

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