Could not find rake-13.0.0 in any of the sourcesのエラーが発生してしまい、動かない状態にあります。

Question

今現在私は、エラーが発生して、サイトが動かない状態にあります。bundle installを実行しても、全く動かない状態です。もしわかる方がいらしたら、教えて頂きたいです。

実行した事

$ gem update --system
Latest version currently installed. Aborting.

terminalでのエラーが発生した。

$ rails s
Could not find rake-13.0.0 in any of the sources
Run `bundle install` to install missing gems.
$ bundle install
Fetching source index from https://rubygems.org/

Retrying fetcher due to error (2/4): Bundler::HTTPError Could not fetch specs from https://rubygems.org/
Retrying fetcher due to error (3/4): Bundler::HTTPError Could not fetch specs from https://rubygems.org/
Retrying fetcher due to error (4/4): Bundler::HTTPError Could not fetch specs from https://rubygems.org/
Could not fetch specs from https://rubygems.org/

source 'https://rubygems.org'


# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.2.11'
# Use mysql as the database for Active Record
gem 'mysql2', '>= 0.3.18'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 4.0.2'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.1.0'
# See https://github.com/rails/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby

# Use jquery as the JavaScript library
gem 'jquery-rails'
# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.0'
# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', '~> 0.4.0', group: :doc

# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'

# Use Unicorn as the app server
# gem 'unicorn'

# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug'
  gem "dotenv-rails"
end

group :development do
  # Access an IRB console on exception pages or by using <%= console %> in views
  gem 'web-console', '~> 2.0'

  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
  gem 'spring'
end

gem 'pry-rails'
gem 'compass-rails','~> 2.0'
gem 'sprockets', '2.11.0'
gem 'websocket-rails'

#pagenation
gem 'kaminari'

#login_logout
gem 'devise'
gem 'paperclip'

#For Heroku
gem 'rails_12factor', group: :production
gem 'therubyracer', platforms: :ruby

#画像
gem 'carrierwave'
gem 'rmagick'
gem 'fog'
gem 'mini_magick'

gem 'stripe'
gem 'redcarpet', '~> 2.3.0'
gem 'coderay'
#円グラフ
gem "chartkick"
gem 'chartable'
gem "bigdecimal", ">= 1.3.2"

GEM
  remote: https://rubygems.org/
  specs:
    rake (13.0.0)