在我现有的项目中，我改变了
gem "twitter-bootstrap-rails"
到
gem 'bootstrap', '~> 4.1.3'
在我的Gemfile中。我现在开始
uninitialized constant ExecJS::Runtimes::RubyRacerRuntime
在线：<%= stylesheet_link_tag "application", :media => "all" %>中的app/views/layouts.html.erb
宝石文件：
source 'https://rubygems.org'
git_source(:github) { |repo| "https://github.com/#{repo}.git" }
ruby '2.5.1'
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 5.2.0'
# Use mysql as the database for Active Record
gem 'mysql2'
# 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'
# 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
gem 'unicorn'
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'
end
group :test do
# Adds support for Capybara system testing and selenium driver
gem 'capybara', '>= 2.15', '< 4.0'
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 'sidekiq'
gem 'paranoia', '~> 2.2'
gem 'console'
gem 'spreadsheet'
gem 'airbrake', '~> 6.2'
gem 'state_machines'
gem 'state_machines-activerecord'
gem 'devise-i18n'
gem 'devise'
gem 'paper_trail'
gem 'execjs'
gem "therubyracer"
#gem 'sprockets-rails', :require => 'sprockets/railtie'
gem "less-rails" #Sprockets (what Rails 3.1 uses for its asset pipeline) supports LESS
#gem "twitter-bootstrap-rails"
gem 'bootstrap', '~> 4.1.3'
#gem 'bootswatch'
#gem 'jquery-rails'
#gem 'devise-bootstrap-views', '~> 1.0'
#gem "font-awesome-rails"
gem "httparty"
gem "ruby-duration"
gem "jquery-rails"
gem 'webpacker', '~> 3.5'
#gem "spreadsheet"
rake about：
About your application's environment
Rails version 5.2.0
Ruby version 2.5.1-p57 (x86_64-linux)
RubyGems version 2.7.7
Rack version 2.0.5
JavaScript Runtime therubyracer (V8)
Middleware Webpacker::DevServerProxy, Rack::Sendfile, ActionDispatch::Static, ActionDispatch::Executor, ActiveSupport::Cache::Strategy::LocalCache::Middleware, Rack::Runtime, Rack::MethodOverride, ActionDispatch::RequestId, RequestStore::Middleware, ActionDispatch::RemoteIp, Sprockets::Rails::QuietAssets, Rails::Rack::Logger, ActionDispatch::ShowExceptions, WebConsole::Middleware, ActionDispatch::DebugExceptions, Airbrake::Rack::Middleware, ActionDispatch::Reloader, ActionDispatch::Callbacks, ActiveRecord::Migration::CheckPending, ActionDispatch::Cookies, ActionDispatch::Session::CookieStore, ActionDispatch::Flash, ActionDispatch::ContentSecurityPolicy::Middleware, Rack::Head, Rack::ConditionalGet, Rack::ETag, Rack::TempfileReaper, Warden::Manager
Application root /var/www/app
Environment development
Database adapter mysql2
Database schema version 20180831081336
gem list：
*** LOCAL GEMS ***
actioncable (5.2.1, 5.2.0)
actionmailer (5.2.1, 5.2.0)
actionpack (5.2.1, 5.2.0)
actionview (5.2.1, 5.2.0)
activejob (5.2.1, 5.2.0)
activemodel (5.2.1, 5.2.0)
activerecord (5.2.1, 5.2.0)
activestorage (5.2.1, 5.2.0)
activesupport (5.2.1, 5.2.0)
addressable (2.5.2)
airbrake (6.3.0)
airbrake-ruby (2.11.0)
archive-zip (0.11.0)
arel (9.0.0)
autoprefixer-rails (9.1.3)
bcrypt (3.1.12)
bigdecimal (default: 1.3.4)
bindex (0.5.0)
bootsnap (1.3.1, 1.3.0)
bootstrap (4.1.3)
bootswatch (4.1.3)
builder (3.2.3)
bundler (1.16.4, default: 1.16.2)
byebug (10.0.2)
capybara (3.7.0, 3.3.1)
childprocess (0.9.0)
chromedriver-helper (1.2.0)
cmath (default: 1.0.0)
coffee-rails (4.2.2)
coffee-script (2.4.1)
coffee-script-source (1.12.2)
commonjs (0.2.7)
concurrent-ruby (1.0.5)
connection_pool (2.2.2)
console (0.5)
crass (1.0.4)
csv (default: 1.0.0)
date (default: 1.0.0)
dbm (default: 1.0.0)
devise (4.5.0, 4.4.3)
devise-bootstrap-views (1.1.0)
devise-i18n (1.6.4)
did_you_mean (1.2.0)
erubi (1.7.1)
etc (default: 1.0.0)
execjs (2.7.0)
fcntl (default: 1.0.0)
ffi (1.9.25)
fiddle (default: 1.0.0)
fileutils (default: 1.0.2)
font-awesome-rails (4.7.0.4)
gdbm (default: 2.0.0)
globalid (0.4.1)
httparty (0.16.2)
i18n (1.1.0, 1.0.1)
io-console (default: 0.4.6)
io-like (0.3.0)
ipaddr (default: 1.2.0)
iso8601 (0.12.0)
jbuilder (2.7.0)
jquery-rails (4.3.3)
json (default: 2.1.0)
kgio (2.11.2)
less (2.6.0)
less-rails (2.8.0)
libv8 (3.16.14.19 x86_64-linux)
listen (3.1.5)
loofah (2.2.2)
mail (2.7.0)
marcel (0.3.2)
method_source (0.9.0)
mimemagic (0.3.2)
mini_mime (1.0.1, 1.0.0)
mini_portile2 (2.3.0)
minitest (5.11.3, 5.10.3)
msgpack (1.2.4)
multi_json (1.13.1)
multi_xml (0.6.0)
mysql2 (0.5.2, 0.5.1)
net-telnet (0.1.1)
nio4r (2.3.1)
nokogiri (1.8.4, 1.8.3)
openssl (default: 2.1.0)
orm_adapter (0.5.0)
paper_trail (10.0.1, 9.2.0)
paper_trail-association_tracking (1.0.0)
paranoia (2.4.1)
popper_js (1.14.3)
power_assert (1.1.1)
psych (default: 3.0.2)
public_suffix (3.0.3, 3.0.2)
puma (3.12.0, 3.11.4)
rack (2.0.5)
rack-protection (2.0.3)
rack-proxy (0.6.4)
rack-test (1.1.0, 1.0.0)
rails (5.2.1, 5.2.0)
rails-dom-testing (2.0.3)
rails-html-sanitizer (1.0.4)
railties (5.2.1, 5.2.0)
raindrops (0.19.0)
rake (12.3.1, 12.3.0)
rb-fsevent (0.10.3)
rb-inotify (0.9.10)
rdoc (default: 6.0.1)
redis (4.0.2, 4.0.1)
ref (2.0.0)
request_store (1.4.1)
responders (2.4.0)
ruby-duration (3.2.3)
ruby-ole (1.2.12.1)
ruby_dep (1.5.0)
rubygems-update (2.7.7)
rubyzip (1.2.2, 1.2.1)
sass (3.5.7, 3.5.6)
sass-listen (4.0.0)
sass-rails (5.0.7)
scanf (default: 1.0.0)
sdbm (default: 1.0.0)
selenium-webdriver (3.14.0, 3.13.0)
sidekiq (5.2.1, 5.1.3)
spreadsheet (1.1.8, 1.1.7)
spring (2.0.2)
spring-watcher-listen (2.0.1)
sprockets (3.7.2)
sprockets-rails (3.2.1)
state_machines (0.5.0)
state_machines-activemodel (0.5.1)
state_machines-activerecord (0.5.1)
stringio (default: 0.0.1)
strscan (default: 1.0.0)
test-unit (3.2.7)
therubyracer (0.12.3)
thor (0.20.0)
thread_safe (0.3.6)
tilt (2.0.8)
twitter-bootstrap-rails (4.0.0)
tzinfo (1.2.5)
uglifier (4.1.18, 4.1.13)
unicorn (5.4.1, 5.4.0)
warden (1.2.7)
web-console (3.7.0, 3.6.2)
webpacker (3.5.5)
webrick (default: 1.4.2)
websocket-driver (0.7.0)
websocket-extensions (0.1.3)
xmlrpc (0.3.0)
xpath (3.1.0)
zlib (default: 1.0.0)
您知道如何解决此问题吗？
答案 0 :(得分：2)
我遇到了同样的问题，用therubyracer运行了mini_racer的{{1}}宝石，现在可以正常工作了。
此修复程序在Mac和Ubuntu服务器上均对我有效
答案 1 :(得分：1)
我遇到了同样的问题，使用了全新的Rails 5.2.0应用。
将Bootstrap gem添加到新项目后，我开始在连续交付版本中看到该错误。但这并没有影响我的发展。直到我对.css资产文件进行了更改。然后我也开始在开发中看到这个错误。
ec2-user:~/environment (master) $ rake about
About your application's environment
Rails version 5.2.0
Ruby version 2.4.1-p111 (x86_64-linux)
RubyGems version 2.6.14
Rack version 2.0.5
JavaScript Runtime therubyracer (V8)
Middleware Rack::Sendfile, ActionDispatch::Static, ActionDispatch::Executor, ActiveSupport::Cache::Strategy::LocalCache::Middleware, Rack::Runtime, Rack::MethodOverride, ActionDispatch::RequestId, ActionDispatch::RemoteIp, Sprockets::Rails::QuietAssets, Rails::Rack::Logger, ActionDispatch::ShowExceptions, WebConsole::Middleware, ActionDispatch::DebugExceptions, ActionDispatch::Reloader, ActionDispatch::Callbacks, ActiveRecord::Migration::CheckPending, ActionDispatch::Cookies, ActionDispatch::Session::CookieStore, ActionDispatch::Flash, ActionDispatch::ContentSecurityPolicy::Middleware, Rack::Head, Rack::ConditionalGet, Rack::ETag, Rack::TempfileReaper
Application root /home/ec2-user/environment
Environment development
Database adapter sqlite3
Database schema version 20180831204125
宝石文件：
source 'https://rubygems.org'
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '5.2.0'
gem 'activesupport', '5.2.0'
# Use sqlite3 as the database for Active Record
gem 'sqlite3', '1.3.13'
# Use Puma as the app server
gem 'puma', '3.7'
# Use SCSS for stylesheets
gem 'sass-rails', '5.0.7'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '4.1.10'
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '4.2.2'
# See https://github.com/rails/execjs#readme for more supported runtimes
gem 'execjs', '~> 2.7.0'
gem 'therubyracer', platforms: :ruby
# Use jquery as the JavaScript library
gem 'jquery-rails', '4.3.3'
# 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', '2.7.0'
# Use Redis adapter to run Action Cable in production
# gem 'redis', '3.0'
# Use ActiveModel has_secure_password
# gem 'bcrypt', '3.1.7'
gem 'passenger', '5.2.3'
# gem 'therubyracer', '0.12.3'
# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development
gem "simple_calendar", "~> 2.0"
gem 'bootstrap', '~> 4.1.3'
group :development, :test do
# Call 'byebug' anywhere in the code to stop execution and get a debugger console
gem 'byebug', platform: :mri
gem 'rspec-rails', '3.7.2'
end
group :development do
# Access an IRB console on exception pages or by using <%= console %> anywhere in the code.
gem 'web-console', '3.6.2'
gem 'listen', '3.0.5'
# Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
gem 'spring', '1.7.2'
gem 'spring-watcher-listen', '2.0.0'
end
# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
宝石清单：
ec2-user:~/environment (master) $ gem list
*** LOCAL GEMS ***
actioncable (5.2.1, 5.2.0)
actionmailer (5.2.1, 5.2.0)
actionpack (5.2.1, 5.2.0)
actionview (5.2.1, 5.2.0)
activejob (5.2.1, 5.2.0)
activemodel (5.2.1, 5.2.0)
activerecord (5.2.1, 5.2.0)
activestorage (5.2.1, 5.2.0)
activesupport (5.2.1, 5.2.0)
arel (9.0.0)
autoprefixer-rails (9.1.3)
bigdecimal (default: 1.3.0)
bindex (0.5.0)
bootstrap (4.1.3)
bootstrap-sass (3.3.7)
builder (3.2.3)
bundler (1.16.3)
bundler-unload (1.0.2)
byebug (10.0.2)
coffee-rails (4.2.2)
coffee-script (2.4.1)
coffee-script-source (1.12.2)
commonjs (0.2.7)
concurrent-ruby (1.0.5)
crass (1.0.4)
did_you_mean (1.1.0)
diff-lcs (1.3)
erubi (1.7.1)
execjs (2.7.0)
executable-hooks (1.5.0)
ffi (1.9.25)
gem-wrappers (1.3.2)
globalid (0.4.1)
i18n (1.1.0)
io-console (default: 0.4.6)
jbuilder (2.7.0)
jquery-rails (4.3.3)
json (default: 2.0.2)
less (2.6.0)
less-rails (2.8.0)
libv8 (3.16.14.19 x86_64-linux)
listen (3.0.5)
loofah (2.2.2)
mail (2.7.0)
marcel (0.3.2)
method_source (0.9.0)
mimemagic (0.3.2)
mini_mime (1.0.1)
mini_portile2 (2.3.0)
minitest (5.11.3, 5.10.1)
multi_json (1.13.1)
net-telnet (0.1.1)
nio4r (2.3.1)
nokogiri (1.8.4)
openssl (default: 2.0.3)
passenger (5.2.3)
popper_js (1.14.3)
power_assert (0.4.1)
psych (default: 2.2.2)
puma (3.7.0)
rack (2.0.5)
rack-test (1.1.0)
rails (5.2.1, 5.2.0)
rails-dom-testing (2.0.3)
rails-html-sanitizer (1.0.4)
railties (5.2.1, 5.2.0)
rake (12.3.1, 12.0.0)
rb-fsevent (0.10.3)
rb-inotify (0.9.10)
rdoc (default: 5.0.0)
ref (2.0.0)
rspec-core (3.7.1)
rspec-expectations (3.7.0)
rspec-mocks (3.7.0)
rspec-rails (3.7.2)
rspec-support (3.7.1)
rubygems-bundler (1.4.5)
rvm (1.11.3.9)
sass (3.5.7)
sass-listen (4.0.0)
sass-rails (5.0.7)
simple_calendar (2.3.0)
spring (1.7.2)
spring-watcher-listen (2.0.0)
sprockets (3.7.2)
sprockets-rails (3.2.1)
sqlite3 (1.3.13)
test-unit (3.2.3)
therubyracer (0.12.3)
thor (0.20.0)
thread_safe (0.3.6)
tilt (2.0.8)
turbolinks (5.0.0)
turbolinks-source (5.2.0)
twitter-bootstrap-rails (4.0.0)
tzinfo (1.2.5)
uglifier (4.1.10)
web-console (3.6.2)
websocket-driver (0.7.0)
websocket-extensions (0.1.3)
xmlrpc (0.2.1)