Problems upgrading Rails 4.0.0 to 4.0.x (4.0.13) - private method `include' called for ActionDispatch::Assertions:Module (NoMethodError)
问题 I could not find a "direct" answer to this anywhere. Since I know there will be many other "Late Upgraders" to the party, I feel I need to get this out. I had a Rails 4.0.0 app running Ruby 2.0.0-p247. After upgrading to 4.0.13, I ran into this error: private method `include' called for ActionDispatch::Assertions:Module (NoMethodError) I received this through rspec and WEBrick. 回答1: I found a solution via another issue from layer-ruby: NoMethodError: private method `include' called for #