Rails 5-Heroku:预编译资产失败（Sass:：SyntaxError:在“lflings regular”之后的CSS无效

我正在尝试将教程博客rails（5.2.1）应用程序推送到heroku。我检查了所有类似的问题，但没有找到答案。我得到的错误是：

remote: -----> Detecting rake tasks
remote: -----> Preparing app for Rails asset pipeline
remote:        Running: rake assets:precompile
remote:        Yarn executable was not detected in the system.
remote:        Download Yarn at https://yarnpkg.com/en/docs/install
remote:        I, [2020-02-21T17:17:19.342502 #751]  INFO -- : Writing /tmp/build_9a4b8f93edcb6949bd3f6eab0443fee7/public/assets/blog-c4dff50241ee865870a1e61848b014b1bfe41645844507124353abe96a2d563a.jpg
remote:        I, [2020-02-21T17:17:19.348422 #751]  INFO -- : Writing /tmp/build_9a4b8f93edcb6949bd3f6eab0443fee7/public/assets/workplace-8b957cb3928834865a124fc613d371b51b2bd32f806caa4fef1d538ea6af0bcf.jpg
remote:        I, [2020-02-21T17:17:24.225768 #751]  INFO -- : Writing /tmp/build_9a4b8f93edcb6949bd3f6eab0443fee7/public/assets/application-b0891f71e83fe8da7539d2c04309266db2d56be33bf3a5453b8ada6570a61a16.js
remote:        I, [2020-02-21T17:17:24.226500 #751]  INFO -- : Writing /tmp/build_9a4b8f93edcb6949bd3f6eab0443fee7/public/assets/application-b0891f71e83fe8da7539d2c04309266db2d56be33bf3a5453b8ada6570a61a16.js.gz
remote:        DEPRECATION WARNING on line 12 of /tmp/build_9a4b8f93edcb6949bd3f6eab0443fee7/vendor/bundle/ruby/2.5.0/gems/bootstrap-sass-3.4.1/assets/stylesheets/_bootstrap-mincer.scss:
remote:        #{} interpolation near operators will be simplified in a future version of Sass.
remote:        To preserve the current behavior, use quotes:
remote:        
remote:          unquote("\"<%- asset_path(\"#{$path}\".replace(/[#?].*$/, '')) + \"#{$path}\".replace(/(^[^#?]*)([#?]?.*$)/, '$2') %>\"")
remote:        
remote:        You can use the sass-convert command to automatically fix most cases.
remote:        
remote:        
remote:        DEPRECATION WARNING on line 16 of /tmp/build_9a4b8f93edcb6949bd3f6eab0443fee7/vendor/bundle/ruby/2.5.0/gems/bootstrap-sass-3.4.1/assets/stylesheets/_bootstrap-mincer.scss:
remote:        #{} interpolation near operators will be simplified in a future version of Sass.
remote:        To preserve the current behavior, use quotes:
remote:        
remote:          unquote('"<%- asset_path("#{$file}") %>"')
remote:        
remote:        You can use the sass-convert command to automatically fix most cases.
remote:        
remote:        
remote:        rake aborted!
remote:        Sass::SyntaxError: Invalid CSS after "...lflings-regular": expected ")", was ".eot".replace(/..."
remote:        (sass):314
remote:        /tmp/build_9a4b8f93edcb6949bd3f6eab0443fee7/vendor/bundle/ruby/2.5.0/gems/sass-3.7.4/lib/sass/scss/parser.rb:1308:in `expected'

我的custom.css.scss文件是：

$navbar-default-bg: #010101;

@import "bootstrap-mincer";
@import "bootstrap"; 

#logo {
  float: left;
  font-size: 1.7em;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: -1px;
  font-weight: bold;
}

#logo:hover{
  color: #fff;
  text-decoration: none;
}

.center{
  text-align: center;
}

.jumbotron {
  background-image: asset-url('workplace.jpg');
  height: 600px;
}

.jumbotron h1{
  color: #010101;
  text-align: center;
  margin-bottom: 30px;
  letter-spacing: -1px;
  font-weight: bold;
}

.btn-xlarge {
  font-size: 1.7em;
  background-color: black;
}

.article-actions{
  border-top: 1px solid #eaeaea;
  padding-top: 5px;
}

.description{
  margin-top: 0;
}

.article-title{
  font-weight: bold;
  font-size: 1.5em;
}

.article-body{
  border-top: 1px solid #eaeaea;
  padding-top: 15px;
  padding-bottom: 15px;
}

footer{
  margin-top: 45px;
  padding-top: 5px;
  border-top: 1px solid #eaeaea;
  color: #777;
}

footer a:hover{
  color: #222;
}

footer small{
  float: left;
}

footer ul{
  float: right;
  list-style: none;
}

footer ul li{
  float: left;
  margin-left: 15px;
}

---

我尝试过使用rails资产：precompile命令，但没有帮助。我还检查了custom.css.scss文件中的错误，但找不到任何错误。我知道第314行有一些sass语法错误，但我如何才能找到那个错误呢

根据以下文件：

//Mincer资产帮助器函数
//
//必须将其导入到.css.ejs.scss文件中。
//然后，-插值将由Sass解析为字符串，并在Sass编译后由EJS进行计算。

---

假设您已经将EJ连接到资产管道中，您的文件需要命名为

custom.css.EJS.scss

在你把我的注意力转移到bootstrap mincer之后，我已经解决了这个问题。我变了 @导入“引导粉碎器”；到

---

@导入“引导链轮”；现在一切都正常了。Thx…

该文件看起来没有问题，您的项目中是否有字体样式表或其他SCS？我只有application.css文件，有两行：

*=require\u tree.*=require_self

尝试将文件更改为

custom.scss

而不是

custom.css.scss

尝试过，没有帮助。。。

$navbar-default-bg: #010101;

@import "bootstrap-mincer";
@import "bootstrap"; 

#logo {
  float: left;
  font-size: 1.7em;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: -1px;
  font-weight: bold;
}

#logo:hover{
  color: #fff;
  text-decoration: none;
}

.center{
  text-align: center;
}

.jumbotron {
  background-image: asset-url('workplace.jpg');
  height: 600px;
}

.jumbotron h1{
  color: #010101;
  text-align: center;
  margin-bottom: 30px;
  letter-spacing: -1px;
  font-weight: bold;
}

.btn-xlarge {
  font-size: 1.7em;
  background-color: black;
}

.article-actions{
  border-top: 1px solid #eaeaea;
  padding-top: 5px;
}

.description{
  margin-top: 0;
}

.article-title{
  font-weight: bold;
  font-size: 1.5em;
}

.article-body{
  border-top: 1px solid #eaeaea;
  padding-top: 15px;
  padding-bottom: 15px;
}

footer{
  margin-top: 45px;
  padding-top: 5px;
  border-top: 1px solid #eaeaea;
  color: #777;
}

footer a:hover{
  color: #222;
}

footer small{
  float: left;
}

footer ul{
  float: right;
  list-style: none;
}

footer ul li{
  float: left;
  margin-left: 15px;
}

// Mincer asset helper functions
//
// This must be imported into a .css.ejs.scss file.
// Then, <% %>-interpolations will be parsed as strings by Sass, and evaluated by EJS after Sass compilation.