blocks|key|4113908|text|对Gemfile进行更改后，不要忘记使用rails+s重新启动服务器|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4113909|重新启动rails服务器的效果非常好！:D|4113910|entityMap^0|K|7|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|N|8|@]|D|@]|E|$]]]|I|$]]

After making changes to Gemfile, do not forget to restart the server with <code>rails s</code>

Restarting the rails server worked like a charm! :D

blocks|key|5531771|text|我通过升级bootstrap-sass解决了这个问题|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5531772|gem+'bootstrap-sass',+'3.2.0.2'|code-block|syntax|javascript|5531773|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I solved this issue by upgrading bootstrap-sass

<pre><code>gem 'bootstrap-sass', '3.2.0.2'
</code></pre>

blocks|key|2003428|text|请在每次更改Gemfile后重新启动rails服务器|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2003429|rails+server|code-block|syntax|javascript|2003430|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Please restart you rails server after every changes in Gemfile

<pre><code>rails server
</code></pre>

blocks|key|1621998|text|使用6之前的rails版本中Bootstrap+5的Sass版本的|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1621999|gem+`bootstrap`|code-block|syntax|javascript|1622000|用于Bootstrap+3和2的Sass版本的请确保您没有|offset|length|style|BOLD|1622001|gem+'bootstrap'++#+Remove+this+line
gem+'bootstrap-sass'|1622002|它应该只是|1622003|gem+'bootstrap-sass'|1622004|entityMap^0|0|0|0|F|N|6|0|0|0|5|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@$I|X|J|Y|K|L]|$I|Z|J|10|K|L]]|9|@]|A|$]]|$1|M|3|N|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|12|8|@$I|13|J|14|K|L]]|9|@]|A|$]]|$1|Q|3|R|5|D|7|15|8|@]|9|@]|A|$E|F]]|$1|S|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|T|$]]

For the Sass version of Bootstrap 5 in versions of rails before 6
use
<pre><code>gem `bootstrap`
</code></pre>
For Sass versions of Bootstrap 3 and 2 Make sure you don't have
<pre><code>gem 'bootstrap' # Remove this line
gem 'bootstrap-sass'
</code></pre>
It should just be
<pre><code>gem 'bootstrap-sass'
</code></pre>

blocks|key|2003361|text|我通过以下步骤解决了这个问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2003362|2003363|List+item|ordered-list-item|2003364|copying+the+"bootstrap.css“in+my+"app/assets/stylesheets/+(缺少)|2003365|gem安装自动修复程序-rails(同时修改Gemfile)|2003366|gem安装链轮(也修改Gemfile)|2003367|bundle+install|2003368|RESTART服务器(不仅仅是刷新页面))|2003369|2003370|entityMap^0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|T|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|U|8|@]|9|@]|A|$]]|$1|F|3|G|5|E|7|V|8|@]|9|@]|A|$]]|$1|H|3|I|5|E|7|W|8|@]|9|@]|A|$]]|$1|J|3|K|5|E|7|X|8|@]|9|@]|A|$]]|$1|L|3|M|5|E|7|Y|8|@]|9|@]|A|$]]|$1|N|3|O|5|E|7|Z|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|R|$]]

I solved it in following steps:

<ol>
<li>List item</li>
<li>copying the "bootstrap.css" in my "app/assets/stylesheets/ (it was missing)</li>
<li>gem install autoprefixer-rails (also modify Gemfile)</li>
<li>gem install sprockets (also modify Gemfile)</li>
<li>bundle install</li>
<li>RESTART server (not just refreshing page)</li>
</ol>

blocks|key|2003497|text|这就是我解决这个问题的方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2003498|转到Bootstrap+for+Sass+Github+page并按照说明进行操作：|offset|length|2003499|2003500|将以下内容添加到the文件中|ordered-list-item|2003501|2003502|gem+'bootstrap-sass'，'~>+3.3.6‘gem+'sass-rails'，'>=+3.2’运行命令bundle+install|style|CODE|2003503|Start/restart+|unordered-list-item|2003504|
|2003505|2003506|2003507|2003508|2003509|rails的|2003510|此外，请确保文件的扩展名为.scss+(对于Sass语法，扩展名为.sass+)。如果您刚刚生成了一个新的Rails应用程序，那么它可能会附带一个.css文件。如果此文件存在，则将为其提供服务，而不是Sass，因此将其重命名。然后，删除所有*=+require_self和*=+require_tree。sass文件中的语句。请改用@import来导入Sass文件。|2003511|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/twbs/bootstrap-sass^0|0|2|U|0|0|0|0|0|1O|E|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|19|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1A|8|@]|9|@$D|1B|E|1C|1|1D]]|A|$]]|$1|F|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]|$1|G|3|H|5|I|7|1F|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|1G|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|1H|8|@$D|1I|E|1J|M|N]]|9|@]|A|$]]|$1|O|3|P|5|Q|7|1K|8|@]|9|@]|A|$]]|$1|R|3|S|5|6|7|1L|8|@]|9|@]|A|$]]|$1|T|3|-4|5|Q|7|1M|8|@]|9|@]|A|$]]|$1|U|3|S|5|6|7|1N|8|@]|9|@]|A|$]]|$1|V|3|-4|5|Q|7|1O|8|@]|9|@]|A|$]]|$1|W|3|-4|5|6|7|1P|8|@]|9|@]|A|$]]|$1|X|3|Y|5|6|7|1Q|8|@]|9|@]|A|$]]|$1|Z|3|10|5|6|7|1R|8|@]|9|@]|A|$]]|$1|11|3|-4|5|6|7|1S|8|@]|9|@]|A|$]]]|12|$13|$5|14|15|16|A|$17|18]]]]

This is how I solved the issue.

Go to <a href="https://github.com/twbs/bootstrap-sass" rel="nofollow">Bootstrap for Sass Github page</a> and follow the instructions: 

<ol>
<li>Add the following to the Gemfile

gem 'bootstrap-sass', '~> 3.3.6'
gem 'sass-rails', '>= 3.2'</li>
<li>Run the command
<code>bundle install</code></li>
<li>Start/restart the server

rails s </li>
</ol>

Also, make sure the file has .scss extension (or .sass for Sass syntax). If you have just generated a new Rails app, it may come with a .css file instead. If this file exists, it will be served instead of Sass, so rename it.
Then, remove all the *= require_self and *= require_tree . statements from the sass file. Instead, use @import to import Sass files.

blocks|key|4114139|text|我也观察到了同样的行为。在我的例子中，我删除了gem+'bootstap-sass‘的版本，它起作用了。可能与gem版本存在兼容性问题，这是导致问题的原因。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4114140|Gem文件|4114141|gem+'bootstrap-sass'|code-block|syntax|javascript|4114142|在gem文件中进行更改后，执行以下命令：|4114143|bundle+install|4114144|如果服务器已在运行，请通过"CTRL%2BC“将其停止，然后重新启动服务器|offset|length|style|BOLD|4114145|rails+s|4114146|entityMap^0|0|0|0|0|0|E|6|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|Z|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|10|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|11|8|@$O|12|P|13|Q|R]]|9|@]|A|$]]|$1|S|3|T|5|F|7|14|8|@]|9|@]|A|$G|H]]|$1|U|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|V|$]]

I have observed the same behaviour. In my case i have removed the version of the gem 'bootstap-sass' and it worked. There might be compatibility issue with the gem version which was causing the problem.

Gem file

<pre><code>gem 'bootstrap-sass'
</code></pre>

After making changes in the gem file perform following commands:

<pre><code>bundle install
</code></pre>

If the server is already running then stop it by "CTRL+C" and start the server again

<pre><code>rails s
</code></pre>

blocks|key|4114225|text|在Gemfile中，您需要添加bootstrap-sass+gem，并确保sass-rails+gem存在-默认情况下，它被添加到新的Rails应用程序中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4114226|gem+'bootstrap-sass',+'3.3.7'
gem+'sass-rails',+'5.0.6'
gem+'rails',+'5.0.0'|code-block|syntax|javascript|4114227|捆绑包安装并重新启动服务器，以使文件可通过管道使用。在app/assets/stylesheets/application.scss:中导入引导程序样式|offset|length|style|BOLD|4114228|//+"bootstrap-sprockets"+must+be+imported+before+"bootstrap"+and+"bootstrap/variables"
@import+"bootstrap-sprockets";
@import+"bootstrap";|4114229|引导-必须在引导之前导入链轮，图标字体才能工作。确保文件具有.scss扩展名(对于Sass语法，则为.sass+)。如果您刚刚生成了一个新的Rails应用程序，那么它可能会附带一个.css文件。如果此文件存在，则将服务它而不是Sass，因此将其重命名为：|4114230|4114231|+$+mv+app/assets/stylesheets/application.css+TO:+app/assets/stylesheets/application.scss|blockquote|4114232|4114233|4114234|然后，从sass文件中删除所有*=+require_self和*=+require_tree+.语句。请改用@import导入Sass文件。例如|CODE|4114235|*=+require_tree+.
*=+require_self|4114236|To:|4114237|@import+require_tree+.
@import+require_self|4114238|不要在Sass中使用*=+require，否则您的其他样式表将无法访问Bootstrap混合或变量。引导程序JavaScript依赖于jQuery。如果您使用的是Rails+5.1%2B，请将jquery-rails+gem添加到Gemfile中：|4114239|gem+'jquery-rails'

$+bundle+install|4114240|需要Bootstrap+Javascripts|4114241|4114242|+app/assets/javascripts/application.js：|4114243|4114244|4114245|//=+require+jquery
//=+require+bootstrap-sprockets|4114246|bootstrap-sprockets和bootstrap不应同时包含在|4114247|4114248|+application.js|4114249|4114250|4114251|。bootstrap-sprockets提供了单独的Bootstrap+Javascript文件(例如，alert.js或dropdown.js+)，而bootstrap提供了一个包含所有Bootstrap+Javascript的串联文件。|4114252|这将修复错误|4114253|Copied+@github|4114254|entityMap^0|0|0|R|14|0|0|0|0|19|3|0|0|0|F|F|V|H|1I|7|1Y|2|0|0|0|3|0|0|A|A|29|A|0|0|0|0|0|0|0|0|0|J|K|9|0|0|0|0|0|1|J|24|9|0|0|6|0|0^^$0|@$1|2|3|4|5|6|7|1X|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|1Y|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|1Z|8|@$I|20|J|21|K|L]]|9|@]|A|$]]|$1|M|3|N|5|D|7|22|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|23|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|24|8|@]|9|@]|A|$]]|$1|R|3|S|5|T|7|25|8|@$I|26|J|27|K|L]]|9|@]|A|$]]|$1|U|3|-4|5|6|7|28|8|@]|9|@]|A|$]]|$1|V|3|-4|5|6|7|29|8|@]|9|@]|A|$]]|$1|W|3|X|5|6|7|2A|8|@$I|2B|J|2C|K|Y]|$I|2D|J|2E|K|Y]|$I|2F|J|2G|K|Y]|$I|2H|J|2I|K|L]]|9|@]|A|$]]|$1|Z|3|10|5|D|7|2J|8|@]|9|@]|A|$E|F]]|$1|11|3|12|5|6|7|2K|8|@$I|2L|J|2M|K|L]]|9|@]|A|$]]|$1|13|3|14|5|D|7|2N|8|@]|9|@]|A|$E|F]]|$1|15|3|16|5|6|7|2O|8|@$I|2P|J|2Q|K|Y]|$I|2R|J|2S|K|Y]]|9|@]|A|$]]|$1|17|3|18|5|D|7|2T|8|@]|9|@]|A|$E|F]]|$1|19|3|1A|5|6|7|2U|8|@]|9|@]|A|$]]|$1|1B|3|-4|5|6|7|2V|8|@]|9|@]|A|$]]|$1|1C|3|1D|5|T|7|2W|8|@]|9|@]|A|$]]|$1|1E|3|-4|5|6|7|2X|8|@]|9|@]|A|$]]|$1|1F|3|-4|5|6|7|2Y|8|@]|9|@]|A|$]]|$1|1G|3|1H|5|D|7|2Z|8|@]|9|@]|A|$E|F]]|$1|1I|3|1J|5|6|7|30|8|@$I|31|J|32|K|Y]|$I|33|J|34|K|Y]]|9|@]|A|$]]|$1|1K|3|-4|5|6|7|35|8|@]|9|@]|A|$]]|$1|1L|3|1M|5|T|7|36|8|@]|9|@]|A|$]]|$1|1N|3|-4|5|6|7|37|8|@]|9|@]|A|$]]|$1|1O|3|-4|5|6|7|38|8|@]|9|@]|A|$]]|$1|1P|3|1Q|5|6|7|39|8|@$I|3A|J|3B|K|Y]|$I|3C|J|3D|K|Y]]|9|@]|A|$]]|$1|1R|3|1S|5|6|7|3E|8|@$I|3F|J|3G|K|L]]|9|@]|A|$]]|$1|1T|3|1U|5|D|7|3H|8|@]|9|@]|A|$E|F]]|$1|1V|3|-4|5|6|7|3I|8|@]|9|@]|A|$]]]|1W|$]]

In your Gemfile you need to add the bootstrap-sass gem, and ensure that the sass-rails gem is present - it is added to new Rails applications by default.

<pre><code>gem 'bootstrap-sass', '3.3.7'
gem 'sass-rails', '5.0.6'
gem 'rails', '5.0.0'
</code></pre>

bundle install and restart your server to make the files available through the pipeline.
Import Bootstrap styles in app/assets/stylesheets/application.scss:

<pre><code>// "bootstrap-sprockets" must be imported before "bootstrap" and "bootstrap/variables"
@import "bootstrap-sprockets";
@import "bootstrap";
</code></pre>

bootstrap-sprockets must be imported before bootstrap for the icon fonts to work.
Make sure the file has .scss extension (or .sass for Sass syntax). If you have just generated a new Rails app, it may come with a .css file instead. If this file exists, it will be served instead of Sass, so rename it:

<blockquote>
 $ mv app/assets/stylesheets/application.css TO:
 app/assets/stylesheets/application.scss
</blockquote>

Then, remove all the <code>*= require_self</code> and <code>*= require_tree .</code> statements from the sass file. Instead, use <code>@import</code> to import Sass files.
e.g

<pre><code>*= require_tree .
*= require_self
</code></pre>

To:

<pre><code>@import require_tree .
@import require_self
</code></pre>

Do not use <code>*= require</code> in Sass or your other stylesheets will not be able to access the Bootstrap mixins or variables.
Bootstrap JavaScript depends on jQuery. If you're using <code>Rails 5.1+</code>, add the jquery-rails gem to your Gemfile:

<pre><code>gem 'jquery-rails'

$ bundle install
</code></pre>

Require Bootstrap Javascripts in 

<blockquote>
 app/assets/javascripts/application.js:
</blockquote>

<pre><code>//= require jquery
//= require bootstrap-sprockets
</code></pre>

<code>bootstrap-sprockets</code> and <code>bootstrap</code> should not both be included in 

<blockquote>
 application.js
</blockquote>

.
<code>bootstrap-sprockets</code> provides individual Bootstrap Javascript files (alert.js or dropdown.js, for example), while <code>bootstrap</code> provides a concatenated file containing all Bootstrap Javascripts.

This will fix the error

<pre><code>Copied @github
</code></pre>

blocks|key|2003396|text|这个错误主要出现在rails+3.2.x版本中。如果您使用的是rails+3.2版，则必须在gem文件中指定一个特殊版本，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2003397|gem+'rails',+'3.2.0'
gem+'bootstrap-sass',+'3.2.0.2'|code-block|syntax|javascript|2003398|它将解决rails+-v+'3.2.0'的问题|offset|length|style|CODE|2003399|entityMap^0|0|0|4|G|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

This error mostly comes in rails 3.2.x versions.
If you are using rails version 3.2 you have to specify a special version in your gem file like below:

<pre><code>gem 'rails', '3.2.0'
gem 'bootstrap-sass', '3.2.0.2'
</code></pre>

It will resolve the problem for <code>rails -v '3.2.0'</code>

blocks|key|4113947|text|将此文件放入gem文件中|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4113948|gem+'bootstrap-sass',+'~>+3.3.5'
gem+'sass-rails',+'>=+3.2'|code-block|syntax|javascript|4113949|然后运行$+bundle+install|offset|length|style|CODE|4113950|重新启动服务器。|4113951|entityMap^0|0|0|4|G|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@$I|T|J|U|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

put this in gem file

<pre><code>gem 'bootstrap-sass', '~&gt; 3.3.5'
gem 'sass-rails', '&gt;= 3.2'
</code></pre>

then run <code>$ bundle install</code>

Restart the server.

blocks|key|5531964|text|如果您在运行集成测试时收到此消息，请确保您的资产gem包含在测试组中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5531965|例如，更改：|5531966|group+:assets+do+++gem+'sass-rails',+'~>+5.0.3'+++gem+'uglifier',+'>=+1.3.0'+end|offset|length|style|CODE|5531967|至：|5531968|group+:assets,+:test+do+++gem+'sass-rails',+'~>+5.0.3'+++gem+'uglifier',+'>=+1.3.0'+end|5531969|entityMap^0|0|0|0|28|0|0|0|2F|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|R|8|@$F|S|G|T|H|I]]|9|@]|A|$]]|$1|J|3|K|5|6|7|U|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|V|8|@$F|W|G|X|H|I]]|9|@]|A|$]]|$1|N|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|O|$]]

If you get this message when running integration tests, make sure that your asset gems are included in the test group.

For example, change:

<code>group :assets do
 gem 'sass-rails', '~&gt; 5.0.3'
 gem 'uglifier', '&gt;= 1.3.0'
end
</code>

To:

<code>group :assets, :test do
 gem 'sass-rails', '~&gt; 5.0.3'
 gem 'uglifier', '&gt;= 1.3.0'
end</code>

blocks|key|5532055|text|我也有同样的问题|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5532056|sass::syntaxerror:+file+to+import+not+found+or+unreadable:+config/variables.|code-block|syntax|javascript|5532057|，我打开一个新的css文件(我称之为custom.css)，然后将所有css复制到该文件中。在application.css上，我删除了|5532058|5532059|+@import“配置/变量”加上所有其他@import|blockquote|5532060|5532061|5532062|这对我有效，我希望它对你也有效！|5532063|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|W|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|X|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|Z|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|R|$]]

I had the same problem

<pre><code>sass::syntaxerror: file to import not found or unreadable: config/variables.
</code></pre>

, I opened a new css file (I called it custom.css) then copied all the css to the file. On application.css I removed the 

<blockquote>
 @import "config/variables" plus all the other @imports
</blockquote>

This worked for me, I hope it does work for you too!

blocks|key|1621955|text|在将这个gem添加到Gemfile之后，请确保运行以下命令|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1621956|++++gem+"bootstrap-sprockets",+"~>3.3"
++++gem+"bootstrap"|code-block|syntax|javascript|1621957|现在停止您的服务器并运行以下命令：|1621958|++++bundle+install
++++rails+server|1621959|重新启动您的服务器。刷新您的浏览器，您应该会看到更改立即反映。在生产环境中，您可能需要运行以下命令来预编译您的资产：|1621960|++++bundle+exec+bin/rake+assets:precompile|1621961|这对我很管用。希望这能对你有所帮助。|1621962|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|W|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

make sure you run the following commands after adding this gem to your Gemfile
put this inside your Gemfile

<pre><code> gem "bootstrap-sprockets", "~&gt;3.3"
 gem "bootstrap"
</code></pre>

now stop your server and run the following:

<pre><code> bundle install
 rails server
</code></pre>

to restart your server. Refresh your browser and you should see changes reflect immediately. 
In production you may have to run this command to precompile your assets:

<pre><code> bundle exec bin/rake assets:precompile
</code></pre>

It worked for me. Hope this was helpful.

blocks|key|4114274|text|我在开发环境中也遇到了类似的错误：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4114275|Error+Image|offset|length|4114276|我解决这个问题的方法是-|4114277|在我的gem文件中，我添加了它们-gem‘’，'~>+4.2.1'|style|BOLD|4114278|在application.js文件中添加gem‘jquery-’|4114279|，添加这些-//=+require+jquery3|unordered-list-item|4114280|4114281|//=需要弹出器|4114282|//=需要使用.scss扩展名对文件进行bootstrap-sprockets|4114283|In，只需添加-|4114284|4114285|@import“引导”；|4114286|在此之后，只需运行包install|4114287|entityMap|0|LINK|mutability|MUTABLE|url|https://i.stack.imgur.com/nNnjG.png^0|0|0|B|0|0|0|H|G|0|V|1|0|6|J|0|0|0|8|0|0|13|0|0|0|0|C|0|9|8|0^^$0|@$1|2|3|4|5|6|7|1A|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1B|8|@]|9|@$D|1C|E|1D|1|1E]]|A|$]]|$1|F|3|G|5|6|7|1F|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|1G|8|@$D|1H|E|1I|J|K]]|9|@]|A|$]]|$1|L|3|M|5|6|7|1J|8|@$D|1K|E|1L|J|K]]|9|@]|A|$]]|$1|N|3|O|5|P|7|1M|8|@$D|1N|E|1O|J|K]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|1P|8|@]|9|@]|A|$]]|$1|R|3|S|5|6|7|1Q|8|@$D|1R|E|1S|J|K]]|9|@]|A|$]]|$1|T|3|U|5|6|7|1T|8|@$D|1U|E|1V|J|K]]|9|@]|A|$]]|$1|V|3|W|5|P|7|1W|8|@]|9|@]|A|$]]|$1|X|3|-4|5|6|7|1X|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|6|7|1Y|8|@$D|1Z|E|20|J|K]]|9|@]|A|$]]|$1|10|3|11|5|6|7|21|8|@$D|22|E|23|J|K]]|9|@]|A|$]]|$1|12|3|-4|5|6|7|24|8|@]|9|@]|A|$]]]|13|$14|$5|15|16|17|A|$18|19]]]]

I was also facing the similar error in development environment:

<a href="https://i.stack.imgur.com/nNnjG.png" rel="nofollow noreferrer">Error Image</a>

I solved this problem by-

<ol>
<li>In my gemfile, I added them - 

gem 'bootstrap', '~> 4.2.1'

gem 'jquery-rails' </li>
<li>In application.js file,add these - 

//= require jquery3

//= require popper

//= require bootstrap-sprockets</li>
<li>In the file with .scss extension, simply add -

@import "bootstrap";

After that, just run bundle install</li>
</ol>

blocks|key|4114299|text|我解决了我的问题|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4114300|gem+'bootstrap'|code-block|syntax|javascript|4114301|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I solved My Issue By Removing
<pre><code>gem 'bootstrap'
</code></pre>

I am suddenly getting this error in development and in production on deployment.

custom.css.scss

<pre><code>@import "bootstrap-sprockets";
@import "bootstrap";
</code></pre>

error (in production)

<pre><code>rake aborted!
Sass::SyntaxError: File to import not found or unreadable: bootstrap-sprockets.
Load paths:
/srv/www/myapp/releases/20141001060418/app/assets/images
/srv/www/myapp/releases/20141001060418/app/assets/javascripts
/srv/www/myapp/releases/20141001060418/app/assets/stylesheets
/srv/www/myapp/releases/20141001060418/vendor/assets/javascripts
/srv/www/myapp/releases/20141001060418/vendor/assets/stylesheets
</code></pre>

Sass::SyntaxError: File to import not found or unreadable: bootstrap-sprockets

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我突然在开发和生产中遇到了这个错误。custom.css.scss@import "bootstrap-sprockets";@import "bootstrap";错误(在生产中)rake aborted!Sass::SyntaxError: File to import not found or unreadable: bootstrap-sprockets.Load paths:/srv/w

问Sass::SyntaxError:未找到或无法读取要导入的文件: bootstrap-sprockets
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