请帮助我，我是一个新的ruby/rails程序员，我想尝试免费的仪表板管理员（AdminLTE2），但是我在尝试安装它时遇到了问题，我可以生成它，
im 已经将"gem 'adminlte2-rails'"添加到 Gemfile，并且 gem 在 rails 生成选项中成功检测。
我也已经在谷歌上搜索了错误代码，但一无所获。
我使用的是所有最新的 Ruby（2.2.2） 技术，GEM 2.4.8，导轨 4.2.1。谢谢对不起，我的英语不好。
g40@Lenovo-G40:~/Sites/TestSites$ bin/rails generate admin_lte2
insert app/assets/stylesheets/application.scss
/home/g40/.rvm/gems/ruby-2.2.2/gems/thor-0.19.1/lib/thor/actions/inject_into_file.rb:98:in `binread': No such file or directory @ rb_sysopen - /home/g40/Sites/TestSites/app/assets/stylesheets/application.scss (Errno::ENOENT)
from /home/g40/.rvm/gems/ruby-2.2.2/gems/thor-0.19.1/lib/thor/actions/inject_into_file.rb:98:in `replace!'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/thor-0.19.1/lib/thor/actions/inject_into_file.rb:59:in `invoke!'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/thor-0.19.1/lib/thor/actions.rb:94:in `action'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/thor-0.19.1/lib/thor/actions/inject_into_file.rb:30:in `insert_into_file'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/adminlte2-rails-0.0.6/lib/generators/admin_lte2/admin_lte2_generator.rb:8:in `main'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/thor-0.19.1/lib/thor/command.rb:27:in `run'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/thor-0.19.1/lib/thor/invocation.rb:126:in `invoke_command'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/thor-0.19.1/lib/thor/invocation.rb:133:in `block in invoke_all'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/thor-0.19.1/lib/thor/invocation.rb:133:in `each'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/thor-0.19.1/lib/thor/invocation.rb:133:in `map'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/thor-0.19.1/lib/thor/invocation.rb:133:in `invoke_all'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/thor-0.19.1/lib/thor/group.rb:232:in `dispatch'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/thor-0.19.1/lib/thor/base.rb:440:in `start'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/railties-4.2.1/lib/rails/generators.rb:157:in `invoke'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/railties-4.2.1/lib/rails/commands/generate.rb:13:in `<top (required)>'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:274:in `require'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:274:in `block in require'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:240:in `load_dependency'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:274:in `require'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/railties-4.2.1/lib/rails/commands/commands_tasks.rb:123:in `require_command!'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/railties-4.2.1/lib/rails/commands/commands_tasks.rb:130:in `generate_or_destroy'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/railties-4.2.1/lib/rails/commands/commands_tasks.rb:50:in `generate'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/railties-4.2.1/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/railties-4.2.1/lib/rails/commands.rb:17:in `<top (required)>'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:274:in `require'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:274:in `block in require'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:240:in `load_dependency'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:274:in `require'
from /home/g40/Sites/TestSites/bin/rails:8:in `<top (required)>'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:268:in `load'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:268:in `block in load'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:240:in `load_dependency'
from /home/g40/.rvm/gems/ruby-2.2.2/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:268:in `load'
from /home/g40/.rvm/rubies/ruby-2.2.2/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /home/g40/.rvm/rubies/ruby-2.2.2/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from -e:1:in `<main>'
错误输出包含以下行：
/home/.../inject_into_file.rb：98：in 'binread'： 没有这样的文件或目录 @ rb_sysopen -/home/g40/Sites/TestSites/app/assets/stylesheets/application.scss （Errno：：ENOENT）
您必须手动创建app/assets/stylesheets/application.scss文件。