csrf_detected: OmniAuth::Strategies::OAuth2::CallbackError

[sjoliver]

I set OAuth up according to the docs but as soon as I click the sign in link in the browser, I get an error this error. I'm new to Rails so struggling to figure this one out, any help would be much appreciated - thanks!

[lucaspetti]

I was having a similar issue, adding this gem to the Gemfile solved it for now (remember to run bundle install) :
gem 'omniauth-rails_csrf_protection'