Started GET "/auth/linkedin/callback?oauth_token=78--bd766e56-a9ff-421b-aa0a-a64027d6b751&oauth_verifier=39000" for 127.0.0.1 at 2015-05-21 17:46:38 -0300
(linkedin) Callback phase initiated.
Processing by SessionController#create as HTML
  Parameters: {"oauth_token"=>"78--bd766e56-a9ff-421b-aa0a-a64027d6b751", "oauth_verifier"=>"39000", "provider"=>"linkedin"}
  User Load (0.2ms)  SELECT "users".* FROM "users" WHERE "users"."id" IS NULL LIMIT 1
  User Load (0.1ms)  SELECT "users".* FROM "users" WHERE "users"."auth_provider" = 'linkedin' AND "users"."auth_uid" = 'i57liHJJnL' LIMIT 1
   (0.0ms)  begin transaction
   (0.1ms)  rollback transaction
Completed 422 Unprocessable Entity in 3.0ms

ActiveRecord::RecordInvalid (Validation failed: Name can't be blank):
  app/models/user.rb:15:in `find_or_create_from_auth_hash'
  app/controllers/session_controller.rb:4:in `create'