rails sでのエラー

Question

先日Progateで勉強を行い、環境構築のノートを元に
・rbenv versions
※2.5.0
・gem install rails
・rails -v
Rails 5.2.4.2
・rails new アプリ名
を打ち込んで新しいアプリが生成された
この後cdを行い作成したアプリに行って
rails sを行えと指示だったので打ち込んだところ

(中略)
rails aborted!
NameError: uninitialized class variable @@schemes in URI
/Users/asupara/works/rails-app/config/application.rb:3:in `<top (required)>'
/Users/asupara/works/rails-app/Rakefile:4:in `<top (required)>'
/Users/asupara/works/rails-app/bin/rails:9:in `<top (required)>'
/Users/asupara/works/rails-app/bin/spring:15:in `<top (required)>'
bin/rails:3:in `load'
bin/rails:3:in `<main>'
(See full trace by running task with --trace)

と出てしまい対処方法がわからないのですが
何か抜けているのでしょうか？

Comments

[okina]

打ち込んだコマンドは正しいものですか？そちらも記載していただけますか

[sei-fujikawa]

~/rails-app (master #)$ rails s
[WARNING] Could not load command "rails/commands/server/server_command". Error: uninitialized constant URI::Generic.
/Users/asupara/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/active_support.rb:80:in `block in load_missing_constant'
(中略)
rails aborted!
NameError: uninitialized class variable @@schemes in URI
/Users/asupara/works/rails-app/config/application.rb:3:in `<top (required)>'
/Users/asupara/works/rails-app/Rakefile:4:in `<top (required)>'
/Users/asupara/works/rails-app/bin/rails:9:in `<top (required)>'
/Users/asupara/works/rails-app/bin/spring:15:in `<top (required)>'
bin/rails:3:in `load'
bin/rails:3:in `<main>'
(See full trace by running task with --trace)

このような状態です

[motoaki]

`rails new`の時には何かエラー出てなかったですか？

[sei-fujikawa]

~/works$ rails new test-app
create
create README.md
create Rakefile
create .ruby-version
create config.ru
create .gitignore
create Gemfile
run git init from "."
Initialized empty Git repository in /Users/asupara/works/test-app/.git/
create package.json
create app

(中略)

Bundle complete! 18 Gemfile dependencies, 78 gems now installed.
Use `bundle info [gemname]` to see where a bundled gem is installed.
run bundle exec spring binstub --all
* bin/rake: Spring inserted
* bin/rails: Spring inserted

です
これといったエラーメッセージは無いように思うのですが

Answer 1

バグという話を聞き、rubyのバージョンを2.5.7に変えてみてとのことだったので
brew update
brew upgrade ruby-build
rbenv install 2.5.7
rbenv global 2.5.7
に変更
railsコマンドがnot foundと出たので
gem install railsを行いrails new app名
cd app名でrails sで無事動作してくれました

Answer 2

rails sを実行するディレクトリはあっていますか？

~/works$ rails new test-appとあるのでmtest-app内でrails sを実行すべきだと思いますが、~/rails-app (master #)$ rails sと書いてあります。

Comments

[sei-fujikawa]

~/works$ cd test-app
~/works/test-app (master #)$ rails s
[WARNING] Could not load command "rails/commands/server/server_command". Error: uninitialized constant URI::Generic.
/Users/asupara/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/active_support.rb:80:in `block in load_missing_constant'

(中略)

rails aborted!
NameError: uninitialized class variable @@schemes in URI
/Users/asupara/works/test-app/config/application.rb:3:in `<top (required)>'
/Users/asupara/works/test-app/Rakefile:4:in `<top (required)>'
/Users/asupara/works/test-app/bin/rails:9:in `<top (required)>'
/Users/asupara/works/test-app/bin/spring:15:in `<top (required)>'
bin/rails:3:in `load'
bin/rails:3:in `<main>'
(See full trace by running task with --trace)
~/works/test-app (master #)$

この状態です

[motoaki]

`bundle exec rails s`はやりましたか？

[sei-fujikawa]

~/works/test-app (master #)$ bundle exec rails s
[WARNING] Could not load command "rails/commands/server/server_command". Error: uninitialized constant URI::Generic.

(中略)

rails aborted!
NameError: uninitialized class variable @@schemes in URI
/Users/asupara/works/test-app/config/application.rb:3:in `<top (required)>'
/Users/asupara/works/test-app/Rakefile:4:in `<top (required)>'
/Users/asupara/works/test-app/bin/rails:9:in `<top (required)>'
/Users/asupara/works/test-app/bin/spring:15:in `require'
/Users/asupara/works/test-app/bin/spring:15:in `<top (required)>'
bin/rails:3:in `load'
bin/rails:3:in `<main>'
(See full trace by running task with --trace)
~/works/test-app (master #)$

同じ反応が返ってきています

[motoaki]

rubyとrailsのバージョンの問題かもしれないですね。
https://qiita.com/oudon722/items/891144726323409df255

Answer 3

bin/rails s もしくは bundle exec rails s で実行してみてください

Comments

[sei-fujikawa]

すみません、打ち込んでみましたが同じエラーが出てしまいました