curl -H "Authorization: Basic dHJ1bXBAdHJ1bXAuY29tOmZvb2Jhcg==n" http://localhost:3000/api/v1/token

SyntaxError: unexpected tIDENTIFIER, expecting end-of-input
...HJ1bXAuY29tOmZvb2Jhcg==n" http://localhost:3000/api/v1/token
...                               ^

namespace :api, defaults: {format: 'json'} do
        namespace :v1  do

            get :token, controller: 'sessions'

            resources :users, only: [:index, :create, :show, :update, :destroy], shallow: true do
                resources :galleries
                resources :categories
                resources :images
        end
        end
    end
end

def token
        authenticate_with_http_basic do |email, password|
          user = User.find_by(email: email)
          if user && user.password == password


            render json: SessionSerializer.new(user, root: false).to_json, status: 201
          else
            render json: { error: 'Incorrect credentials'}, status: 401
          end
        end

      end

module Api
  module V1
    class SessionSerializer < ActiveModel::Serializer
      attribute :token
      def token
        object.authentication_token
      end
    end
  end

end