I dont understand why this rspec test is failing. Can you help?

require 'spec_helper'

describe "Editing todo lists" do
    it "updates a todo list with the correct stuff" do

        todo_list = TodoList.create(title: "Groceries", description: "Grocery list")

        visit "/todo_lists"
        within "#todo_list_#{todo_list.id}" do
            click_link "Edit"
        end 

        fill_in "Title", with: "This is a new title"
        fill_in "Description", with: "New description"
        click_button "Update Todo List"

        todo_list.reload

        expect(page).to have_content("Todo list was successfully updated.")
        expect(todo_list.title).to eq("This is a new title")
        expect(todo_list.description). to eq("New description")
    end 

end