Better Errors Gem not working in local browser

Question

I have tried all the things from this link to try to solve this, but it doesn't work

Better Errors Gem not working in local browser, no errors visible

This is what I have in my gem file

    group :development, :test do
  gem 'pry'
  gem 'pry-rails'
  gem 'rspec-rails'
  gem 'coderay'
gem 'erubis'
gem 'better_errors'
gem 'binding_of_caller'

  gem 'factory_girl_rails', '~> 4.0'
  gem 'database_cleaner'
  gem 'capistrano', require: false
  gem 'capistrano-rvm', require: false
  gem 'capistrano-rails', require: false
  gem 'capistrano-bundler', require: false
  gem 'capistrano3-puma', require: false
  gem 'webmock', require: false
  gem "rails-erd"
  gem 'byebug'
end

I'm running this on my mac http://localhost:3000/

I have set set config.consider_all_requests_local = true in config/environments/development.rb

when I add this line in development.rb

BetterErrors::Middleware.allow_ip! "0.0.0.0/0"

I get this error

development.rb:55:in `block in <top (required)>': undefined method `allow_ip!' for BetterErrors::Middleware:Class (NoMethodError)

I also did a bundle install

This is my development.rb

    Rails.application.configure do
  # Settings specified here will take precedence over those in config/application.rb.

  # In the development environment your application's code is reloaded on
  # every request. This slows down response time but is perfect for development
  # since you don't have to restart the web server when you make code changes.
  config.cache_classes = false

  # Do not eager load code on boot.
  config.eager_load = false

  # Show full error reports and disable caching.
  config.consider_all_requests_local = true
  config.action_controller.perform_caching = false

  # Don't care if the mailer can't send.
  config.action_mailer.raise_delivery_errors = false

  # Print deprecation notices to the Rails logger.
  config.active_support.deprecation = :log

  # Raise an error on page load if there are pending migrations.
  config.active_record.migration_error = :page_load

  # Debug mode disables concatenation and preprocessing of assets.
  # This option may cause significant delays in view rendering with a large
  # number of complex assets.
  config.assets.debug = false

  # Adds additional error checking when serving assets at runtime.
  # Checks for improperly declared sprockets dependencies.
  # Raises helpful error messages.
  config.assets.raise_runtime_errors = true



config.consider_all_requests_local = true

  # Raises error for missing translations
  # config.action_view.raise_on_missing_translations = true
  config.action_mailer.default_url_options = {host: 'localhost:3000'}
  config.action_mailer.default_options = {from: ENV['EMAIL_USER']}
  config.action_mailer.raise_delivery_errors = true
  config.action_mailer.delivery_method = :smtp
  config.action_mailer.smtp_settings = {
      address: 'smtp.gmail.com',
      port: 587,
      domain: ENV['DOMAIN'],
      authentication: 'plain',
      enable_starttls_auto: true,
      user_name: ENV['EMAIL_USER'],
      password: ENV['EMAIL_PASSWORD']
  }

  Paperclip.options[:command_path] = "/usr/local/bin/"



end