我有一个具有设置的远程服务器，我无法更改，因此无法自我更新：
Ruby版本为1.8.7 Rubygems的版本是1.6.2 Rails版本为2.3.4
当我尝试在服务器上为我的应用程序提供开发和生产版本时，获得以下响应：
undefined method `ap_geq_3?' for Haml::Util:Module
我正在使用capistrano和bundler，我的包输出是：
Using rake (0.8.7)
Using activesupport (2.3.4)
Using rack (1.0.1)
Using actionpack (2.3.4)
Using actionmailer (2.3.4)
Using activerecord (2.3.4)
Using activeresource (2.3.4)
Using bundler (1.0.10)
Using haml (3.1.2)
Using mysql (2.8.1)
Using rails (2.3.4)
Updating .gem files in vendor/cache
我真的不知道如何进一步诊断问题，并找出潜在的冲突。任何非常有价值的帮助！感谢。
错误的完整跟踪是：
rake aborted!
undefined method `ap_geq_3?' for Haml::Util:Module
/usr/local/lib/ruby/gems/1.8/gems/haml-3.1.1/rails/../lib/haml/railtie.rb:1
<--applocation-->/vendor/rails/activesupport/lib/active_support/dependencies.rb:156:in `require'
<--applocation-->/vendor/rails/activesupport/lib/active_support/dependencies.rb:156:in `require'
<--applocation-->/vendor/rails/activesupport/lib/active_support/dependencies.rb:521:in `new_constants_in'
<--applocation-->/vendor/rails/activesupport/lib/active_support/dependencies.rb:156:in `require'
/usr/local/lib/ruby/gems/1.8/gems/haml-3.1.1/rails/../lib/haml.rb:47
<--applocation-->/vendor/rails/activesupport/lib/active_support/dependencies.rb:156:in `require'
<--applocation-->/vendor/rails/activesupport/lib/active_support/dependencies.rb:156:in `require'
<--applocation-->/vendor/rails/activesupport/lib/active_support/dependencies.rb:521:in `new_constants_in'
<--applocation-->/vendor/rails/activesupport/lib/active_support/dependencies.rb:156:in `require'
/usr/local/lib/ruby/gems/1.8/gems/haml-3.1.1/rails/../init.rb:2
/usr/local/lib/ruby/gems/1.8/gems/haml-3.1.1/rails/init.rb:1:in `load'
/usr/local/lib/ruby/gems/1.8/gems/haml-3.1.1/rails/init.rb:1:in `evaluate_init_rb'
<--applocation-->/config/../vendor/rails/railties/lib/rails/plugin.rb:158:in `evaluate_init_rb'
<--applocation-->/vendor/rails/activesupport/lib/active_support/core_ext/kernel/reporting.rb:11:in `silence_warnings'
<--applocation-->/config/../vendor/rails/railties/lib/rails/plugin.rb:154:in `evaluate_init_rb'
<--applocation-->/config/../vendor/rails/railties/lib/rails/plugin.rb:48:in `load'
<--applocation-->/config/../vendor/rails/railties/lib/rails/plugin/loader.rb:38:in `load_plugins'
<--applocation-->/config/../vendor/rails/railties/lib/rails/plugin/loader.rb:37:in `each'
<--applocation-->/config/../vendor/rails/railties/lib/rails/plugin/loader.rb:37:in `load_plugins'
<--applocation-->/config/../vendor/rails/railties/lib/initializer.rb:369:in `load_plugins'
<--applocation-->/config/../vendor/rails/railties/lib/initializer.rb:165:in `process'
<--applocation-->/config/../vendor/rails/railties/lib/initializer.rb:113:in `send'
<--applocation-->/config/../vendor/rails/railties/lib/initializer.rb:113:in `run'
<--applocation-->/config/environment.rb:20
<--applocation-->/vendor/rails/activesupport/lib/active_support/dependencies.rb:156:in `require'
<--applocation-->/vendor/rails/activesupport/lib/active_support/dependencies.rb:156:in `require'
<--applocation-->/vendor/rails/activesupport/lib/active_support/dependencies.rb:521:in `new_constants_in'
<--applocation-->/vendor/rails/activesupport/lib/active_support/dependencies.rb:156:in `require'
<--applocation-->/vendor/rails/railties/lib/tasks/misc.rake:4
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `call'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `execute'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `each'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `execute'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:597:in `invoke_with_call_chain'
/usr/local/lib/ruby/1.8/monitor.rb:242:in `synchronize'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:607:in `invoke_prerequisites'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:604:in `each'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:604:in `invoke_prerequisites'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:596:in `invoke_with_call_chain'
/usr/local/lib/ruby/1.8/monitor.rb:242:in `synchronize'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:583:in `invoke'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2051:in `invoke_task'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `each'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2023:in `top_level'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2001:in `run'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:1998:in `run'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/bin/rake:31
/usr/local/bin/rake:19:in `load'
/usr/local/bin/rake:19