Working in development, Not working in production

[seyonv]

Deployment is on Heroku. Nothing I can notice in production.rb would cause this issue and
there's no production specific gem that would cause this either.

Any ideas or is this a problem anyone else has experienced before?

[seyonv]

Never mind, nothing related to this gem

[thapakazi]

@seyonv what was the issue, I am facing the similar.
after commenting out the impersonates section, then only app started working on other envs.

class ApplicationController < ActionController::API
  before_action :authenticate_user!
  include DeviseTokenAuth::Concerns::SetUserByToken
  # impersonates :user
  ...
end

Are there any change this gem tied up to environment specific configuration ??