環境 ruby: 2.4.2p198 Rails: 5.2.1 エラー発生 $ bundle install : : Fetching mysql2 0.4.10 Installing mysql2 0.4.10 with native extensions Errno::EACCES: Permission denied @ rb_sysopen - /usr/local/var/rbenv/versions/2.4.2/lib/ruby/gems/2.4.…