How to fix 401 (Unauthorized) error?

Question

Ruby on Rails

I am using gem devise_auth_token for authentication. When I try to login I get a 401 Unauthorized error

Started POST "/auth/sign_in" for 10.12.4.5 at 2018-06-01 11:37:48 +0500
Processing by DeviseTokenAuth::SessionsController#create as JSON
  Parameters: {"password"=>"[FILTERED]", "session"=>{"password"=>"[FILTERED]"}}
Unpermitted parameter: :session
Completed 401 Unauthorized in 26ms (Views: 0.7ms | ActiveRecord: 0.0ms)

application_controller.rb:

class ApplicationController < ActionController::API

  include DeviseTokenAuth::Concerns::SetUserByToken
  before_action :configure_permitted_parameters, if: :devise_controller?

  protected

  def configure_permitted_parameters
    devise_parameter_sanitizer.permit(:sign_up, keys: [:login,  :email, :password, :password_confirmation])
    devise_parameter_sanitizer.permit(:sign_in, keys: [:login, :password])
    devise_parameter_sanitizer.permit(:account_update, keys: [:password, :password_confirmation, :current_password])
  end
end

routes.rb:

Rails.application.routes.draw do
  mount_devise_token_auth_for 'User', at: 'auth'
end

Answer 1

Read the logs carefully, they are great in rails.
Unpermitted parameter: :session