Ruby on rails Can'；t启动Rails应用程序（UTF-8中的字节序列无效（ArgumentError））

我在启动rails应用程序时遇到问题。我运行rails s，得到以下错误：

=> Booting WEBrick
=> Rails 5.0.1 application starting in development on http://localhost:3000
=> Run `rails server -h` for more startup options
Exiting
Traceback (most recent call last):
    14: from bin/rails:4:in `<main>'
    13: from bin/rails:4:in `require'
    12: from /usr/local/lib/ruby/gems/2.5.0/gems/railties-5.0.1/lib/rails/commands.rb:18:in `<top (required)>'
    11: from /usr/local/lib/ruby/gems/2.5.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:49:in `run_command!'
    10: from /usr/local/lib/ruby/gems/2.5.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:85:in `server'
     9: from /usr/local/lib/ruby/gems/2.5.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:85:in `tap'
     8: from /usr/local/lib/ruby/gems/2.5.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:90:in `block in server'
     7: from /usr/local/lib/ruby/gems/2.5.0/gems/railties-5.0.1/lib/rails/commands/server.rb:77:in `start'
     6: from /usr/local/lib/ruby/gems/2.5.0/gems/railties-5.0.1/lib/rails/commands/server.rb:124:in `log_to_stdout'
     5: from /usr/local/lib/ruby/gems/2.5.0/gems/rack-2.0.5/lib/rack/server.rb:354:in `wrapped_app'
     4: from /usr/local/lib/ruby/gems/2.5.0/gems/railties-5.0.1/lib/rails/commands/server.rb:59:in `app'
     3: from /usr/local/lib/ruby/gems/2.5.0/gems/rack-2.0.5/lib/rack/server.rb:219:in `app'
     2: from /usr/local/lib/ruby/gems/2.5.0/gems/rack-2.0.5/lib/rack/server.rb:319:in `build_app_and_options_from_config'
     1: from /usr/local/lib/ruby/gems/2.5.0/gems/rack-2.0.5/lib/rack/builder.rb:36:in `parse_file'
/usr/local/lib/ruby/gems/2.5.0/gems/rack-2.0.5/lib/rack/builder.rb:36:in `[]': invalid byte sequence in UTF-8 (ArgumentError)

=>启动WEBrick
=>Rails 5.0.1应用程序在上开始开发http://localhost:3000
=>运行“rails服务器-h”以获得更多启动选项
退出
回溯（最近一次呼叫最后一次）：
14：从箱子/轨道：4:in`'
13:从箱子/轨道：4:在'require'中
12:from/usr/local/lib/ruby/gems/2.5.0/gems/railties-5.0.1/lib/rails/commands.rb:18:in`'
11:from/usr/local/lib/ruby/gems/2.5.0/gems/railties-5.0.1/lib/rails/commands/commands\u tasks.rb:49:in“run\u command！”
10:from/usr/local/lib/ruby/gems/2.5.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:85:in'server'
9:from/usr/local/lib/ruby/gems/2.5.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:85:in'tap'
8:from/usr/local/lib/ruby/gems/2.5.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:90:in“服务器中的块”
7:from/usr/local/lib/ruby/gems/2.5.0/gems/railties-5.0.1/lib/rails/commands/server.rb:77:in'start'
6:from/usr/local/lib/ruby/gems/2.5.0/gems/railties-5.0.1/lib/rails/commands/server.rb:124:in'log_to_stdout'
5:from/usr/local/lib/ruby/gems/2.5.0/gems/rack-2.0.5/lib/rack/server.rb:354:in'wrapped_app'
4:from/usr/local/lib/ruby/gems/2.5.0/gems/railties-5.0.1/lib/rails/commands/server.rb:59:in'app'
3:from/usr/local/lib/ruby/gems/2.5.0/gems/rack-2.0.5/lib/rack/server
2:from/usr/local/lib/ruby/gems/2.5.0/gems/rack-2.0.5/lib/rack/server.rb:319:in'build_app_和_options_from_config'
1:from/usr/local/lib/ruby/gems/2.5.0/gems/rack-2.0.5/lib/rack/builder.rb:36:in'parse_file'
/usr/local/lib/ruby/gems/2.5.0/gems/rack-2.0.5/lib/rack/builder.rb:36:在“[]”中：UTF-8中的字节序列无效（ArgumentError）

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我不知道发生了什么，为什么会这样。我已经在网上搜索了所有的解决方案。有人能帮我吗？谢谢

bin/rails中有什么奇怪的东西吗？有非UTF8字符吗？试试这个宝石试试这个