Add controller

app/controllers/attendance_tracker_controller.rb

@@ -0,0 +1,4 @@
+class AttendanceTrackerController < ApplicationController
+  def index
+  end
+end

app/helpers/attendance_tracker_helper.rb

@@ -0,0 +1,2 @@
+module AttendanceTrackerHelper
+end

app/views/attendance_tracker/index.html.erb

@@ -0,0 +1,2 @@
+<h1>AttendanceTracker#index</h1>
+<p>Find me in app/views/attendance_tracker/index.html.erb</p>

config/routes.rb

@@ -1,6 +1,3 @@
 Rails.application.routes.draw do
-  # Define your application routes per the DSL in https://guides.rubyonrails.org/routing.html
-
-  # Defines the root path route ("/")
-  # root "articles#index"
+  root controller: :attendance_tracker, action: :index
 end

test/controllers/attendance_tracker_controller_test.rb

@@ -0,0 +1,8 @@
+require "test_helper"
+
+class AttendanceTrackerControllerTest < ActionDispatch::IntegrationTest
+  test "should get index" do
+    get attendance_tracker_index_url
+    assert_response :success
+  end
+end