我想做Bootstrap V 4.0及更高版本的组件，实际结果是Bootstraps 3.3.7的组件。 当我尝试进行Gem更新时，这就是我得到的：
ERROR: While executing gem ... (Gem::RemoteFetcher::FetchError)
server did not return a valid file (http://gems.rubyforge.org/specs.4.8.gz)
我安装了Bootstrap，但是我开始在Bootstrap 3.3.7上工作并更新到4.0。从那以后我有问题。 这是我在代码文件中的Gemfile：
source 'https://rubygems.org'
git_source(:github) { |repo| "https://github.com/#{repo}.git" }
ruby '2.4.4'
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 5.2.2'
# Use sqlite3 as the database for Active Record
gem 'sqlite3', '~> 1.3.6'
# Use Puma as the app server
gem 'puma', '~> 3.11'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
gem 'webpacker', '~> 3.5'
# See https://github.com/rails/execjs#readme for more supported runtimes
# gem 'mini_racer', platforms: :ruby
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.2'
# Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
gem 'turbolinks', '~> 5'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.5'
# Use Redis adapter to run Action Cable in production
# gem 'redis', '~> 4.0'
# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'
# Use ActiveStorage variant
# gem 'mini_magick', '~> 4.8'
# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development
# Reduces boot times through caching; required in config/boot.rb
gem 'bootsnap', '>= 1.1.0', require: false
group :development, :test do
# Call 'byebug' anywhere in the code to stop execution and get a debugger console
gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
end
group :development do
# Access an interactive console on exception pages or by calling 'console' anywhere in the code.
gem 'web-console', '>= 3.3.0'
gem 'listen', '>= 3.0.5', '< 3.2'
# Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
gem 'spring'
gem 'spring-watcher-listen', '~> 2.0.0'
gem 'popper_js', '>= 1.12.3'
end
group :test do
# Adds support for Capybara system testing and selenium driver
gem 'capybara', '>= 2.15'
gem 'selenium-webdriver'
# Easy installation and use of chromedriver to run system tests with Chrome
gem 'chromedriver-helper'
end
# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
gem 'autoprefixer-rails'
gem 'bootstrap-sass'
gem 'bootstrap', '~> 4.3.1'
gem 'font-awesome-sass', '~> 5.0.9'
gem 'simple_form'
gem 'jquery-rails'
这是我的Gemfile.lock：
GEM
remote: https://rubygems.org/
specs:
actioncable (5.2.2)
actionpack (= 5.2.2)
nio4r (~> 2.0)
websocket-driver (>= 0.6.1)
actionmailer (5.2.2)
actionpack (= 5.2.2)
actionview (= 5.2.2)
activejob (= 5.2.2)
mail (~> 2.5, >= 2.5.4)
rails-dom-testing (~> 2.0)
actionpack (5.2.2)
actionview (= 5.2.2)
activesupport (= 5.2.2)
rack (~> 2.0)
rack-test (>= 0.6.3)
rails-dom-testing (~> 2.0)
rails-html-sanitizer (~> 1.0, >= 1.0.2)
actionview (5.2.2)
activesupport (= 5.2.2)
builder (~> 3.1)
erubi (~> 1.4)
rails-dom-testing (~> 2.0)
rails-html-sanitizer (~> 1.0, >= 1.0.3)
activejob (5.2.2)
activesupport (= 5.2.2)
globalid (>= 0.3.6)
activemodel (5.2.2)
activesupport (= 5.2.2)
activerecord (5.2.2)
activemodel (= 5.2.2)
activesupport (= 5.2.2)
arel (>= 9.0)
activestorage (5.2.2)
actionpack (= 5.2.2)
activerecord (= 5.2.2)
marcel (~> 0.3.1)
activesupport (5.2.2)
concurrent-ruby (~> 1.0, >= 1.0.2)
i18n (>= 0.7, < 2)
minitest (~> 5.1)
tzinfo (~> 1.1)
addressable (2.6.0)
public_suffix (>= 2.0.2, < 4.0)
archive-zip (0.11.0)
io-like (~> 0.3.0)
arel (9.0.0)
autoprefixer-rails (9.4.7)
execjs
bindex (0.5.0)
bootsnap (1.4.0)
msgpack (~> 1.0)
bootstrap (4.3.1)
autoprefixer-rails (>= 9.1.0)
popper_js (>= 1.14.3, < 2)
sassc-rails (>= 2.0.0)
bootstrap-sass (3.4.1)
autoprefixer-rails (>= 5.2.1)
sassc (>= 2.0.0)
builder (3.2.3)
byebug (11.0.0)
capybara (3.13.2)
addressable
mini_mime (>= 0.1.3)
nokogiri (~> 1.8)
rack (>= 1.6.0)
rack-test (>= 0.6.3)
regexp_parser (~> 1.2)
xpath (~> 3.2)
childprocess (0.9.0)
ffi (~> 1.0, >= 1.0.11)
chromedriver-helper (2.1.0)
archive-zip (~> 0.10)
nokogiri (~> 1.8)
coffee-rails (4.2.2)
coffee-script (>= 2.2.0)
railties (>= 4.0.0)
coffee-script (2.4.1)
coffee-script-source
execjs
coffee-script-source (1.12.2)
concurrent-ruby (1.1.4)
crass (1.0.4)
erubi (1.8.0)
execjs (2.7.0)
ffi (1.9.25)
font-awesome-sass (5.0.13)
sassc (>= 1.11)
globalid (0.4.2)
activesupport (>= 4.2.0)
i18n (1.5.3)
concurrent-ruby (~> 1.0)
io-like (0.3.0)
jbuilder (2.8.0)
activesupport (>= 4.2.0)
multi_json (>= 1.2)
jquery-rails (4.3.3)
rails-dom-testing (>= 1, < 3)
railties (>= 4.2.0)
thor (>= 0.14, < 2.0)
listen (3.1.5)
rb-fsevent (~> 0.9, >= 0.9.4)
rb-inotify (~> 0.9, >= 0.9.7)
ruby_dep (~> 1.2)
loofah (2.2.3)
crass (~> 1.0.2)
nokogiri (>= 1.5.9)
mail (2.7.1)
mini_mime (>= 0.1.1)
marcel (0.3.3)
mimemagic (~> 0.3.2)
method_source (0.9.2)
mimemagic (0.3.3)
mini_mime (1.0.1)
mini_portile2 (2.4.0)
minitest (5.11.3)
msgpack (1.2.6)
multi_json (1.13.1)
nio4r (2.3.1)
nokogiri (1.10.1)
mini_portile2 (~> 2.4.0)
popper_js (1.14.5)
public_suffix (3.0.3)
puma (3.12.0)
rack (2.0.6)
rack-proxy (0.6.5)
rack
rack-test (1.1.0)
rack (>= 1.0, < 3)
rails (5.2.2)
actioncable (= 5.2.2)
actionmailer (= 5.2.2)
actionpack (= 5.2.2)
actionview (= 5.2.2)
activejob (= 5.2.2)
activemodel (= 5.2.2)
activerecord (= 5.2.2)
activestorage (= 5.2.2)
activesupport (= 5.2.2)
bundler (>= 1.3.0)
railties (= 5.2.2)
sprockets-rails (>= 2.0.0)
rails-dom-testing (2.0.3)
activesupport (>= 4.2.0)
nokogiri (>= 1.6)
rails-html-sanitizer (1.0.4)
loofah (~> 2.2, >= 2.2.2)
railties (5.2.2)
actionpack (= 5.2.2)
activesupport (= 5.2.2)
method_source
rake (>= 0.8.7)
thor (>= 0.19.0, < 2.0)
rake (12.3.2)
rb-fsevent (0.10.3)
rb-inotify (0.10.0)
ffi (~> 1.0)
regexp_parser (1.3.0)
ruby_dep (1.5.0)
rubyzip (1.2.2)
sass (3.7.3)
sass-listen (~> 4.0.0)
sass-listen (4.0.0)
rb-fsevent (~> 0.9, >= 0.9.4)
rb-inotify (~> 0.9, >= 0.9.7)
sass-rails (5.0.7)
railties (>= 4.0.0, < 6)
sass (~> 3.1)
sprockets (>= 2.8, < 4.0)
sprockets-rails (>= 2.0, < 4.0)
tilt (>= 1.1, < 3)
sassc (2.0.0)
ffi (~> 1.9.6)
rake
sassc-rails (2.1.0)
railties (>= 4.0.0)
sassc (>= 2.0)
sprockets (> 3.0)
sprockets-rails
tilt
selenium-webdriver (3.141.0)
childprocess (~> 0.5)
rubyzip (~> 1.2, >= 1.2.2)
simple_form (4.1.0)
actionpack (>= 5.0)
activemodel (>= 5.0)
spring (2.0.2)
activesupport (>= 4.2)
spring-watcher-listen (2.0.1)
listen (>= 2.7, < 4.0)
spring (>= 1.2, < 3.0)
sprockets (3.7.2)
concurrent-ruby (~> 1.0)
rack (> 1, < 3)
sprockets-rails (3.2.1)
actionpack (>= 4.0)
activesupport (>= 4.0)
sprockets (>= 3.0.0)
sqlite3 (1.3.13)
thor (0.20.3)
thread_safe (0.3.6)
tilt (2.0.9)
turbolinks (5.2.0)
turbolinks-source (~> 5.2)
turbolinks-source (5.2.0)
tzinfo (1.2.5)
thread_safe (~> 0.1)
uglifier (4.1.20)
execjs (>= 0.3.0, < 3)
web-console (3.7.0)
actionview (>= 5.0)
activemodel (>= 5.0)
bindex (>= 0.4.0)
railties (>= 5.0)
webpacker (3.5.5)
activesupport (>= 4.2)
rack-proxy (>= 0.6.1)
railties (>= 4.2)
websocket-driver (0.7.0)
websocket-extensions (>= 0.1.0)
websocket-extensions (0.1.3)
xpath (3.2.0)
nokogiri (~> 1.8)
PLATFORMS
ruby
DEPENDENCIES
autoprefixer-rails
bootsnap (>= 1.1.0)
bootstrap (~> 4.3.1)
bootstrap-sass
byebug
capybara (>= 2.15)
chromedriver-helper
coffee-rails (~> 4.2)
font-awesome-sass (~> 5.0.9)
jbuilder (~> 2.5)
jquery-rails
listen (>= 3.0.5, < 3.2)
popper_js (>= 1.12.3)
puma (~> 3.11)
rails (~> 5.2.2)
sass-rails (~> 5.0)
selenium-webdriver
simple_form
spring
spring-watcher-listen (~> 2.0.0)
sqlite3 (~> 1.3.6)
turbolinks (~> 5)
tzinfo-data
uglifier (>= 1.3.0)
web-console (>= 3.3.0)
webpacker (~> 3.5)
RUBY VERSION
ruby 2.4.4p296
BUNDLED WITH
2.0.1
答案 0 :(得分：0)
@valentine只需删除gem.lock，然后进行捆绑安装，我认为应该可以解决该错误，我没有足够的要评论的地方，因此请在答案中写出它
答案 1 :(得分：0)
看起来像这些论文之间的冲突
gem 'bootstrap-sass'
gem 'bootstrap', '~> 4.3.1'
Bootstrap 4是用Sass编写的，而版本3中却没有（更少）。
bootstrap-sass bundle install 查看此逐步指南 https://medium.com/@biancapower/how-to-add-bootstrap-4-to-a-rails-5-app-650118459a1e