我正在尝试将我的项目版本的rails更新为5.2 . 我更新了Gemfile,如下所示:
gem 'rails', '~> 5.2.1'
当我运行bundle时,我得到以下输出:
Bundler could not find compatible versions for gem "actionmailer":
In Gemfile:
devise_invitable was resolved to 1.7.5, which depends on
actionmailer (>= 4.1.0)
rails (~> 5.2.1) was resolved to 5.2.2.rc1, which depends on
actionmailer (= 5.2.2.rc1)
我不明白为什么bundler找不到兼容版本 - 5.2.2.rc1大于4.1.0并且等于5.2.2.rc1 . 我错过了什么?