% rails db:create
rails aborted!
LoadError: cannot load such file -- mimemagic
/projects/〜〜〜/config/application.rb:7:in `<main>'
/projects/〜〜〜/Rakefile:4:in `<main>'
bin/rails:4:in `<main>'
git hubからとあるファイルをcloneしdb:createをした際に生じたエラー
まいむまじっく.......???
なかなかマイナーなファイルが原因を引き起こしてるっぽいけども・・・
ひとりでは解決困難!!先輩の力を借りてる最中、Qiitaをみてみるとこんな記事が
a.com/zQmjRAb73seN5RM/items/5fa74d2a4d346cdd386e
バージョンの問題っぽい・・・?
その通りにコマンドを実行してみた
$gem list 〇〇
//〇〇には該当ファイルを入れる(今回だとmimemagic)
結果は......
mimemagic (default: 0.3.5, 0.3.4, 0.3.3)
ではどんなファイルがあるのかを確認してみる
find ~/.rbenv -type f | grep 〇〇
//〇〇には該当ファイルを入れる(今回だとmimemagic)
結果は......
(一部抜粋)
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/test/files/image.png
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/test/files/application.zip
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/CHANGELOG.md
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/script/freedesktop.org.xml
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/script/generate-mime.rb
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/README.md
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/Rakefile
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/mimemagic.gemspec
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/.gitignore
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/lib/mimemagic/tables.rb
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/lib/mimemagic/version.rb
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/lib/mimemagic/overlay.rb
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/lib/mimemagic.rb
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/Gemfile
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/.travis.yml
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.4/.yardopts
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.4/LICENSE
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.4/test/mimemagic_test.rb
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.4/test/files/application.vnd.openxmlformats-officedocument.spreadsheetml{gdocs}.sheet
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.4/test/files/application.x-tar
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.4/test/files/application.gzip
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.4/test/files/application.x-bzip
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.4/test/files/application.vnd.openxmlformats-officedocument.spreadsheetml{msoffice}.sheet
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.4/test/files/image.jpeg
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.4/test/files/application.x-ruby
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.4/test/files/image.png
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.4/test/files/application.vnd.openxmlformats-officedocument.spreadsheetml{rubyxl}.sheet
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.4/test/files/application.zip
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.4/CHANGELOG.md
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.4/script/freedesktop.org.xml
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.4/script/generate-mime.rb/Users/tech-camp/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/test/files/image.png
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/test/files/application.zip
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/CHANGELOG.md/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/script/freedesktop.org.xml
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/script/generate-mime.rb
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/README.md
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/Rakefile
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/mimemagic.gemspec
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/.gitignore
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/lib/mimemagic/tables.rb
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/lib/mimemagic/version.rb
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/lib/mimemagic/overlay.rb
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/lib/mimemagic.rb
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/Gemfile
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.3/.travis.yml
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.4/.yardopts
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.4/LICENSE
/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mimemagic-0.3.4/test/mimemagic_test.rb
みてみると 0.3.3 0.3.4のファイルはあることになっているが、0.3.5がないとのこと
ここが食い違っているから生じたエラー is 濃厚......
この食い違いを解決するには、
% gem install mimemagic -v 0.3.5
結果
Successfully installed mimemagic-0.3.5
そして畳みかけます
% bundle install
% rails db:create
成功!!!!!!!
LoadErrorのさいはぜひ参考にしてみてください!