I struggled kind with the same problem yesterday. I don't know about your rails version but I'm on rails 5 and to fix this I had to delete the require 'rspec/autorun' from spec_helper.rb.

So the head of the file looks like this:

# This file is copied to spec/ when you run 'rails generate rspec:install'
ENV["RAILS_ENV"] ||= 'test'
require File.expand_path("../../config/environment", __FILE__)
require 'rspec/rails'
require 'capybara'

I also modified my gemfile and changed the requirements for rspec and capybara

group :development, :test do
    gem 'rspec-rails', '~> 3.5'
end

group :test do
    gem 'capybara', '~> 2.4'
end

then run bundler again in your terminal

In the create_spec.rb file be aware of any typos! I had to fix also some typos I had to get this running. e.g. I had

click_button "Create Todo List"

instead of

click_button "Create Todo list"

I hope this can help

I'm using rails 5 too but there is no 'rspec/autorun' on spec_helper.rb

Did the >3.5 version changes and checked for typo indeed, after fixing the typos this works:

require 'spec_helper'

describe "Creating todo lists" do it "redirects to the todolist index page on success" do visit "/todo_lists" click_link "New Todo List" expect(page).to have_content("New Todo List")

    fill_in "Title", with: "My todo list"
    fill_in "Description", with: "This is what I'm doing today."
    click_button "Create Todo list"

    expect(page).to have_content("My todo list")
end

end