Adding Todo List items Errors

I've run successful tests for the Todo list project up until the adding todo items sections where I keep getting different error messages below. The block of code it is referring to is below along with both error messages and a link to github

Adding todo items is successful with valid content (FAILED - 1)

Failures:

1) Adding todo items is successful with valid content Failure/Error: expect(page).to have_content("Added todo list item") expected to find text "Added todo list item" in "Grocery list Milk New Todo Item"

# ./spec/features/todo_items/create_spec.rb:18:in `block (2 levels) in <top (required)>'

Adding todo items is successful with valid content (FAILED - 1)

Failures:

1) Adding todo items is successful with valid content Failure/Error: Click_button "Save" NoMethodError: undefined method `Click_button' for #<RSpec::Core::ExampleGroup::Nested_1:0xba12bac8>

# ./spec/features/todo_items/create_spec.rb:17:in `block (2 levels) in <top (required)>'

require 'spec_helper' describe "Adding todo items" do let!(:todo_list) {TodoList.create(title:"Grocery list", description:"Groceries")}

def visit_todo_list(list)
    visit "/todo_lists"
    within "#todo_list_#{list.id}" do
        click_link "List Items"
    end
end

it "is successful with valid content" do
    visit_todo_list(todo_list)
    click_link "New Todo Item"
    fill_in "Content", with: "Milk"
    click_button "Save"
    expect(page).to have_content("Added todo list item")
    within("ul.todo_items") do
        expect(page).to have_content("Milk")
    end
end

end

https://github.com/tmoreton/todo.git