JWT token on Heroku not working. Signature not verified

Im using Tymon\JWTAuth for Laravel 5, for JWT login.

It works fine on my dev server. I can login, and parse the user from the token.

When I upload the project to a Live heroku server however, I get an error.

   "message":"Token Signature could not be verified."

I can login just fine, and get a token in response from the LIVE server, however when I try to parse the user from the token, its a no go.

via Chebli Mohamed