Heroku/Rails/Devise: The change you wanted was rejected
问题 I'm having a problem with my Rails 4.2 app running the latest version of Devise on Heroku. I'm going to preface this by stating that I have not pushed any code changes to production in quite some time and that this issue only started recently. When I go to log in, I receive an error saying "The change you wanted was rejected." When I view the logs, I can see that it's a problem with the CSRF token. 2015-04-04T19:52:22.430533+00:00 app[web.1]: Started POST "/users/sign_in" for 76.119.72.58 at