如上所述，我通过更新Gemfile中的版本并运行rails app：update将我的Rails从v4更新到v5.1.5。我尝试加载页面时收到以下错误导致服务器崩溃：
ActionView::Template::Error ($map2: (3rem 2.5rem 2rem 1.5rem 1.25rem 1rem 0.75rem) is not a map for `map-merge'):
19: src="https://maps.googleapis.com/maps/api/js?key=<%= ENV["GOOGLE_MAPS_KEY"]%>&callback=initMap"
20: type="text/javascript">
21: </script>
22: <%= stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track' => true %>
23: <%= javascript_include_tag 'application', 'data-turbolinks-track' => true %>
24: <%= csrf_meta_tags %>
25: </head>
app/assets/stylesheets/application.scss:18
app/views/layouts/application.html.erb:22:in `_app_views_layouts_application_html_erb__2123457921920629012_70201480953880'
NoMethodError: undefined method `original_exception' for #<ActionView::Template::Error:0x007fb21c9d6068>
from /usr/local/rvm/gems/ruby-2.3.4/gems/web-console-2.3.0/lib/web_console/extensions.rb:16:in `block in render_exception_with_web_console'
from /usr/local/rvm/gems/ruby-2.3.4/gems/web-console-2.3.0/lib/web_console/extensions.rb:3:in `tap'
from /usr/local/rvm/gems/ruby-2.3.4/gems/web-console-2.3.0/lib/web_console/extensions.rb:3:in `render_exception_with_web_console'
from /usr/local/rvm/gems/ruby-2.3.4/gems/actionpack-5.1.5/lib/action_dispatch/middleware/debug_exceptions.rb:69:in `rescue in call'
from /usr/local/rvm/gems/ruby-2.3.4/gems/actionpack-5.1.5/lib/action_dispatch/middleware/debug_exceptions.rb:58:in `call'
from /usr/local/rvm/gems/ruby-2.3.4/gems/web-console-2.3.0/lib/web_console/middleware.rb:20:in `block in call'
from /usr/local/rvm/gems/ruby-2.3.4/gems/web-console-2.3.0/lib/web_console/middleware.rb:18:in `catch'
from /usr/local/rvm/gems/ruby-2.3.4/gems/web-console-2.3.0/lib/web_console/middleware.rb:18:in `call'
from /usr/local/rvm/gems/ruby-2.3.4/gems/actionpack-5.1.5/lib/action_dispatch/middleware/show_exceptions.rb:31:in `call'
from /usr/local/rvm/gems/ruby-2.3.4/gems/railties-5.1.5/lib/rails/rack/logger.rb:36:in `call_app'
from /usr/local/rvm/gems/ruby-2.3.4/gems/railties-5.1.5/lib/rails/rack/logger.rb:24:in `block in call'
from /usr/local/rvm/gems/ruby-2.3.4/gems/activesupport-5.1.5/lib/active_support/tagged_logging.rb:69:in `block in tagged'
from /usr/local/rvm/gems/ruby-2.3.4/gems/activesupport-5.1.5/lib/active_support/tagged_logging.rb:26:in `tagged'
from /usr/local/rvm/gems/ruby-2.3.4/gems/activesupport-5.1.5/lib/active_support/tagged_logging.rb:69:in `tagged'
from /usr/local/rvm/gems/ruby-2.3.4/gems/railties-5.1.5/lib/rails/rack/logger.rb:24:in `call'
from /usr/local/rvm/gems/ruby-2.3.4/gems/sprockets-rails-3.2.1/lib/sprockets/rails/quiet_assets.rb:13:in `call'
from /usr/local/rvm/gems/ruby-2.3.4/gems/actionpack-5.1.5/lib/action_dispatch/middleware/remote_ip.rb:79:in `call'
from /usr/local/rvm/gems/ruby-2.3.4/gems/actionpack-5.1.5/lib/action_dispatch/middleware/request_id.rb:25:in `call'
from /usr/local/rvm/gems/ruby-2.3.4/gems/rack-2.0.4/lib/rack/method_override.rb:22:in `call'
from /usr/local/rvm/gems/ruby-2.3.4/gems/rack-2.0.4/lib/rack/runtime.rb:22:in `call'
from /usr/local/rvm/gems/ruby-2.3.4/gems/activesupport-5.1.5/lib/active_support/cache/strategy/local_cache_middleware.rb:27:in `call'
from /usr/local/rvm/gems/ruby-2.3.4/gems/actionpack-5.1.5/lib/action_dispatch/middleware/executor.rb:12:in `call'
from /usr/local/rvm/gems/ruby-2.3.4/gems/actionpack-5.1.5/lib/action_dispatch/middleware/static.rb:125:in `call'
from /usr/local/rvm/gems/ruby-2.3.4/gems/rack-2.0.4/lib/rack/sendfile.rb:111:in `call'
from /usr/local/rvm/gems/ruby-2.3.4/gems/railties-5.1.5/lib/rails/engine.rb:522:in `call'
from /usr/local/rvm/gems/ruby-2.3.4/gems/rack-2.0.4/lib/rack/handler/webrick.rb:86:in `service'
from /usr/local/rvm/rubies/ruby-2.3.4/lib/ruby/2.3.0/webrick/httpserver.rb:140:in `service'
from /usr/local/rvm/rubies/ruby-2.3.4/lib/ruby/2.3.0/webrick/httpserver.rb:96:in `run'
from /usr/local/rvm/rubies/ruby-2.3.4/lib/ruby/2.3.0/webrick/server.rb:296:in `block in start_thread'
10.240.1.50 - - [06/Apr/2018:06:01:47 UTC] "GET / HTTP/1.1" 500 1477
- -> /
10.240.1.30 - - [06/Apr/2018:06:01:50 UTC] "GET /favicon.ico HTTP/1.1" 200 0
http://traid-emikaijuin.c9users.io/ -> /favicon.ico
我发现了一个类似的帖子，它与默认的application.scss和application.js有关，需要尚未创建的目录，但这不适用于我的情况。
这是application.html.erb的开头：
<!DOCTYPE html>
<html>
<head>
<title>Workspace</title>
<link
href="https://fonts.googleapis.com/css?family=Raleway:200,400,700,800"
rel="stylesheet">
<script
src="https://code.jquery.com/jquery-3.3.1.js"
integrity="sha256-2Kok7MbOyxpgUVvAk/HJ2jigOSYS2auK4Pfzbm7uH60="
crossorigin="anonymous"></script>
<script
defer
src="https://use.fontawesome.com/releases/v5.0.6/js/all.js"></script>
<script
async
defer
src="https://maps.googleapis.com/maps/api/js?key=<%= ENV["GOOGLE_MAPS_KEY"]%>&callback=initMap"
type="text/javascript">
</script>
<%= stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track' => true %>
<%= javascript_include_tag 'application', 'data-turbolinks-track' => true %>
<%= csrf_meta_tags %>
</head>
和我的application.scss
/*
* This is a manifest file that'll be compiled into application.css, which will include all the files
* listed below.
*
* Any CSS and SCSS file within this directory, lib/assets/stylesheets, vendor/assets/stylesheets,
* or any plugin's vendor/assets/stylesheets directory can be referenced here using a relative path.
*
* You're free to add application-wide styles to this file and they'll appear at the bottom of the
* compiled file so the styles you add here take precedence over styles defined in any styles
* defined in the other CSS/SCSS files in this directory. It is generally better to create a new
* file per style scope.
*
*= require_tree .
*= require_self
*/
@import "bulma";
@import "bootstrap";
// html {
// background-color: rgba(107,186,167,0.3);
// }
// body{
// }
答案 0 :(得分：2)
您的网络控制台上的宝石已过期。
尝试删除Gemfile中的所有版本限制：
gem web-console
然后使用
bundle update web-console
答案 1 :(得分：0)
original_exception 在 Rails 5.1 中更改为 cause。在此处查看提交：https://github.com/rails/rails/commit/b9ba263e5aaa151808df058f5babfed016a1879f
将 original_exception 替换为 cause 以解决问题。