安装包有问题

Question

This is the compiler error I get when trying to bundle install.

Gem::InstallError: rack requires Ruby version >= 2.3.0.
An error occurred while installing rack (2.2.3), and Bundler cannot continue.
Make sure that `gem install rack -v '2.2.3'` succeeds before bundling.

When I ruby -v I get -v ruby 2.7.2p137 (2020-10-01 revision 5445e04352) [x64-mingw32] and also doing gem install rack -v '2.2.3' works but it still gives me the same error when try to bundle install.

Answer 1

You have several versions of Rack. You have to uninstall all versions except 2.2.3 So, do this:

bundle info rack

# then check all versions and run this code for each versions except 2.2.3 
# replace __VERSION__ with unneeded rack version
gem uninstall rack -v '__VERSION__'

Cheers