我一直在开发期间定期将我的应用程序部署到Heroku，直到现在尚无问题。
此构建仅在几个次要HTML和CSS发生变化后失败，并且似乎在本地正常运行。从那以后，我恢复了成功构建的以前的提交，但这也导致了相同的错误。
我只包含了构建日志的最高部分，但如果其相关，则可以包括其余部分。
-----> Ruby app detected
-----> Compiling Ruby/Rails
-----> Using Ruby version: ruby-2.3.1
-----> Installing dependencies using bundler 1.15.2
Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin -j4 --deployment
Warning: the running version of Bundler (1.15.2) is older than the version that created the lockfile (1.16.1). We suggest you upgrade to the latest version of Bundler by running `gem install bundler`.
Fetching gem metadata from https://rubygems.org/.........
Fetching version metadata from https://rubygems.org/..
Fetching dependency metadata from https://rubygems.org/.
Using rake 12.3.1
Using concurrent-ruby 1.0.5
Using minitest 5.11.3
Using thread_safe 0.3.6
Using builder 3.2.3
Using erubi 1.7.1
Using mini_portile2 2.3.0
Using crass 1.0.4
Using rack 2.0.4
Using nio4r 2.3.0
Using websocket-extensions 0.1.3
Using mini_mime 1.0.0
Using arel 9.0.0
Using mimemagic 0.3.2
Using execjs 2.7.0
Using bcrypt 3.1.11
Using msgpack 1.2.4
Using popper_js 1.12.9
Using rb-fsevent 0.10.3
Using ffi 1.9.23
Using bundler 1.15.2
Using coffee-script-source 1.12.2
Using method_source 0.9.0
Using thor 0.20.0
Using orm_adapter 0.5.0
Using multi_json 1.13.1
Using pg 0.20.0
Using puma 3.11.4
Using tilt 2.0.8
Using i18n 1.0.1
Using tzinfo 1.2.5
Using rack-test 1.0.0
Using warden 1.2.7
Using sprockets 3.7.1
Using websocket-driver 0.7.0
Using mail 2.7.0
Using marcel 0.3.2
Using autoprefixer-rails 8.3.0
Using uglifier 4.1.9
Using bootsnap 1.3.0
Using rb-inotify 0.9.10
Using nokogiri 1.8.2
Using coffee-script 2.4.1
Using activesupport 5.2.0
Using sass-listen 4.0.0
Using globalid 0.4.1
Using activemodel 5.2.0
Using jbuilder 2.7.0
Using sass 3.5.6
Using activejob 5.2.0
Using activerecord 5.2.0
Using rails-dom-testing 2.0.3
Using loofah 2.2.2
Using bootstrap 4.1.0
Using rails-html-sanitizer 1.0.4
Using actionview 5.2.0
Using actionpack 5.2.0
Using actioncable 5.2.0
Using actionmailer 5.2.0
Using activestorage 5.2.0
Using railties 5.2.0
Using sprockets-rails 3.2.1
Using coffee-rails 4.2.2
Using responders 2.4.0
Using jquery-rails 4.3.3
Using rails 5.2.0
Using sass-rails 5.0.7
Using devise 4.4.3
Bundle complete! 24 Gemfile dependencies, 68 gems now installed.
Gems in the groups development and test were not installed.
Bundled gems are installed into ./vendor/bundle.
Bundle completed (10.65s)
Cleaning up the bundler cache.
Warning: the running version of Bundler (1.15.2) is older than the version that created the lockfile (1.16.1). We suggest you upgrade to the latest version of Bundler by running `gem install bundler`.
The latest bundler is 1.16.1, but you are currently running 1.15.2.
To update, run `gem install bundler`
-----> Installing node-v8.10.0-linux-x64
-----> Detecting rake tasks
-----> Preparing app for Rails asset pipeline
Running: rake assets:precompile
Yarn executable was not detected in the system.
Download Yarn at https://yarnpkg.com/en/docs/install
Asset precompilation completed (1.85s)
Cleaning assets
Running: rake assets:clean
sh: 1: Syntax error: word unexpected (expecting ")")
!
! Command: 'bin/rails runner "puts %Q{heroku_detecting_active_storage_config=#{Rails.application.config.active_storage.service}}"' failed unexpectedly:
! /tmp/build_51f3c3aeade1d66d2890531aa58b477d/vendor/bundle/ruby/2.3.0/gems/bundler-1.15.2/lib/bundler/rubygems_integration.rb:377:in `block (2 levels) in replace_gem': Error loading the 'sqlite3' Active Record adapter. Missing a gem it depends on? sqlite3 is not part of the bundle. Add it to your Gemfile. (Gem::LoadError)
! from /tmp/build_51f3c3aeade1d66d2890531aa58b477d/vendor/bundle/ruby/2.3.0/gems/activerecord-5.2.0/lib/active_record/connection_adapters/sqlite3_adapter.rb:12:in `<main>'
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! Push rejected, failed to compile Ruby app.
! Push failed此错误似乎是由对Heroku Ruby Buildpack的更改造成的，如下所述现在修复了。