環境
Windows10
-> Ruby -> 2.5.1
-> Rails -> 5.2.0
以下エラー
console
Traceback (most recent call last):
53: from bin/rails:4:in `<main>'
52: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
51: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
50: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:65:in `register'
49: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
48: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
47: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/commands.rb:18:in `<top (required)>'
46: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/command.rb:46:in `invoke'
45: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/command/base.rb:65:in `perform'
44: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/thor-0.20.0/lib/thor.rb:387:in `dispatch'
43: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/thor-0.20.0/lib/thor/invocation.rb:126:in `invoke_command'
42: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/thor-0.20.0/lib/thor/command.rb:27:in `run'
41: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/commands/generate/generate_command.rb:21:in `perform'
40: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/command/actions.rb:18:in `require_application_and_environment!'
39: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/application.rb:337:in `require_environment!'
38: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
37: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
36: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:65:in `register'
35: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
34: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
33: from C:/Users/coron/Documents/02_foundings/services/Intara-Vote/config/environment.rb:5:in `<top (required)>'
32: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/application.rb:361:in `initialize!'
31: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/initializable.rb:60:in `run_initializers'
30: from C:/Ruby25-x64/lib/ruby/2.5.0/tsort.rb:205:in `tsort_each'
29: from C:/Ruby25-x64/lib/ruby/2.5.0/tsort.rb:226:in `tsort_each'
28: from C:/Ruby25-x64/lib/ruby/2.5.0/tsort.rb:347:in `each_strongly_connected_component'
27: from C:/Ruby25-x64/lib/ruby/2.5.0/tsort.rb:347:in `call'
26: from C:/Ruby25-x64/lib/ruby/2.5.0/tsort.rb:347:in `each'
25: from C:/Ruby25-x64/lib/ruby/2.5.0/tsort.rb:349:in `block in each_strongly_connected_component'
24: from C:/Ruby25-x64/lib/ruby/2.5.0/tsort.rb:415:in `each_strongly_connected_component_from'
23: from C:/Ruby25-x64/lib/ruby/2.5.0/tsort.rb:415:in `call'
22: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/initializable.rb:50:in `tsort_each_child'
21: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/initializable.rb:50:in `each'
20: from C:/Ruby25-x64/lib/ruby/2.5.0/tsort.rb:421:in `block in each_strongly_connected_component_from'
19: from C:/Ruby25-x64/lib/ruby/2.5.0/tsort.rb:431:in `each_strongly_connected_component_from'
18: from C:/Ruby25-x64/lib/ruby/2.5.0/tsort.rb:422:in `block (2 levels) in each_strongly_connected_component_from'
17: from C:/Ruby25-x64/lib/ruby/2.5.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
16: from C:/Ruby25-x64/lib/ruby/2.5.0/tsort.rb:228:in `block in tsort_each'
15: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/initializable.rb:61:in `block in run_initializers'
14: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/initializable.rb:32:in `run'
13: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/initializable.rb:32:in `instance_exec'
12: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/engine.rb:613:in `block in <class:Engine>'
11: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/engine.rb:613:in `each'
10: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/engine.rb:614:in `block (2 levels) in <class:Engine>'
9: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/engine.rb:656:in `load_config_initializer'
8: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/activesupport-5.2.0/lib/active_support/notifications.rb:170:in `instrument'
7: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/engine.rb:657:in `block in load_config_initializer'
6: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:50:in `load'
5: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:50:in `load'
4: from C:/Users/coron/Documents/02_foundings/services/Intara-Vote/config/initializers/session_store.rb:1:in `<top (required)>'
3: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/active_support.rb:42:in `load_missing_constant'
2: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/active_support.rb:53:in `rescue in load_missing_constant'
1: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/active_support.rb:8:in `without_bootsnap_cache'
C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/active_support.rb:53:in `block in load_missing_constant': uninitialized constant AppName (NameError)
なにをしようとしたか
Railsにはセッション管理方法として、主に３つある。
そのうちのActive Recordを使ったセッション管理をしたかったのだが、環境構築中にエラーがおきた。
Active Record-Session_storeというGemを使った環境構築時、必ず以下のコマンドを実行する。
※ READMEにかいてあったもん。
$ rails generate active_record:session_migration
このとき上述したエラーがおきた。
回避
1.Gemfileの編集。bootsnapを定義している行をコメントアウト
Gemfile
# Reduces boot times through caching; required in config/boot.rb
# gem 'bootsnap', '>= 1.1.0', require: false
2.Bundleアップデート
$ bundle update
3.さっきのコマンド実行
$ rails generate active_record:session_migration
4.Gemfileを戻す
Gemfile
# Reduces boot times through caching; required in config/boot.rb
gem 'bootsnap', '>= 1.1.0', require: false
おわり
こんな小さなエラーでしたが、このエラー原因がbootsnapではないことを誰かに教えてほしかったのです。
もし明確なエラー原因をご存知でしたら、お教えください。