Seems like cookie tossing is happening but FastRender is not even installed

Hey everyone!

I am building an app that let’s users sign-up through twitter upon authorization i am redirecting the user to a sub domain of the app for example: http://localhost:3000/login?token=GFNMjznlzakFYY4iPyN9yED and the console logs me: fast_render.js:98 Uncaught Error: seems like cookie tossing is happening. visit here: http://git.io/q4IRHQ
but i don’t even have fast render package installed… what’s going on?

Thanks!