rails実行時のエラー”warning: already initialized constant FileUtils::VERSION”

初めてみた内容だったので、備忘録として記録します

概要

rails sを実行すると以下の様な文が出る様になった↓

rbenv/versions/2.6.0/lib/ruby/2.6.0/fileutils/version.rb:4: warning: already initialized constant FileUtils::VERSION
rbenv/versions/2.6.0/lib/ruby/gems/2.6.0/gems/fileutils-1.4.1/lib/fileutils.rb:105: warning: previous definition of VERSION was here
/Users.rbenv/versions/2.6.0/lib/ruby/2.6.0/fileutils.rb:1267: warning: already initialized constant FileUtils::Entry_::S_IF_DOOR
rbenv/versions/2.6.0/lib/ruby/gems/2.6.0/gems/fileutils-1.4.1/lib/fileutils.rb:1284: warning: previous definition of S_IF_DOOR was here
rbenv/versions/2.6.0/lib/ruby/2.6.0/fileutils.rb:1540: warning: already initialized constant FileUtils::Entry_::DIRECTORY_TERM
rbenv/versions/2.6.0/lib/ruby/gems/2.6.0/gems/fileutils-1.4.1/lib/fileutils.rb:1568: warning: previous definition of DIRECTORY_TERM was here
rbenv/versions/2.6.0/lib/ruby/2.6.0/fileutils.rb:1595: warning: already initialized constant FileUtils::OPT_TABLE
rbenv/versions/2.6.0/lib/ruby/gems/2.6.0/gems/fileutils-1.4.1/lib/fileutils.rb:1626: warning: previous definition of OPT_TABLE was here
rbenv/versions/2.6.0/lib/ruby/2.6.0/fileutils.rb:1649: warning: already initialized constant FileUtils::LOW_METHODS
rbenv/versions/2.6.0/lib/ruby/gems/2.6.0/gems/fileutils-1.4.1/lib/fileutils.rb:1685: warning: previous definition of LOW_METHODS was here
rbenv/versions/2.6.0/lib/ruby/2.6.0/fileutils.rb:1656: warning: already initialized constant FileUtils::METHODS
rbenv/versions/2.6.0/lib/ruby/gems/2.6.0/gems/fileutils-1.4.1/lib/fileutils.rb:1692: warning: previous definition of METHODS was here

原因

調べてみると、fileutilsgを複数回読み込むエラーのよう

解決策

gem uninstall fileutils

gem update --default

これでエラーが消えました！