Bundler找不到gem“activesupport”的兼容版本：

Question

将我的Rails 4.2.5应用程序升级到5，现在我在执行捆绑包安装时收到以下错误：

bundle install
Fetching gem metadata from https://rubygems.org/..........
Fetching version metadata from https://rubygems.org/..
Fetching dependency metadata from https://rubygems.org/.
Resolving dependencies...
Bundler could not find compatible versions for gem "activesupport":
In Gemfile:
rails (= 5.0.0) was resolved to 5.0.0, which depends on
  activejob (= 5.0.0) was resolved to 5.0.0, which depends on
    globalid (>= 0.3.6) was resolved to 0.3.7, which depends on
      activesupport (>= 4.1.0)

google-webfonts-rails (~> 0.0.4) was resolved to 0.0.4, which depends on
  activesupport (< 5.0, > 3.2.0)

jbuilder (~> 2.5) was resolved to 2.6.0, which depends on
  activesupport (< 5.1, >= 3.0.0)

rails (= 5.0.0) was resolved to 5.0.0, which depends on
  activesupport (= 5.0.0)

rails (= 5.0.0) was resolved to 5.0.0, which depends on
  activesupport (= 5.0.0)

rails (= 5.0.0) was resolved to 5.0.0, which depends on
  activesupport (= 5.0.0)

rails (= 5.0.0) was resolved to 5.0.0, which depends on
  activesupport (= 5.0.0)

rails (= 5.0.0) was resolved to 5.0.0, which depends on
  activesupport (= 5.0.0)

rails (= 5.0.0) was resolved to 5.0.0, which depends on
  activesupport (= 5.0.0)

rails (= 5.0.0) was resolved to 5.0.0, which depends on
  activesupport (= 5.0.0)

rails (= 5.0.0) was resolved to 5.0.0, which depends on
  actionpack (= 5.0.0) was resolved to 5.0.0, which depends on
    rails-dom-testing (~> 2.0) was resolved to 2.0.1, which depends on
      activesupport (< 6.0, >= 4.2.0)

spring was resolved to 2.0.0, which depends on
  activesupport (>= 4.2)

rails (= 5.0.0) was resolved to 5.0.0, which depends on
  sprockets-rails (>= 2.0.0) was resolved to 3.2.0, which depends on
    activesupport (>= 4.0)

这是rails的新手，以前从来没有遇到过这个问题。我尝试了gem update和bundle update，但仍然得到这个错误。谢谢。

Answer 1

这里解释了你的问题：google-webfonts-rails (~> 0.0.4) was resolved to 0.0.4, which depends on activesupport (< 5.0, > 3.2.0)

一旦支持Rails5，您需要使用更新版本的google-webfonts-rails gem，否则您需要完全删除该gem。