我正在尝试使用Octopress 3构建我的Jekyll网站。我想使用Octopress Asset Pipeline插件，但在运行jekyll build时我一直收到此错误：
/usr/local/lib/ruby/gems/2.2.0/gems/octopress-hooks-2.6.1/lib/octopress-hooks.rb:140: warning: already initialized constant Jekyll::PageHooks
/usr/local/lib/ruby/gems/2.2.0/gems/octopress-hooks-2.6.1/lib/octopress-hooks.rb:140: warning: previous definition of PageHooks was here
Configuration file: /Users/robcrocombe/Documents/octopress/test/_config.yml
/usr/local/lib/ruby/gems/2.2.0/gems/octopress-hooks-2.6.1/lib/octopress-hooks.rb:169:in `reset': stack level too deep (SystemStackError)
from /usr/local/lib/ruby/gems/2.2.0/gems/octopress-hooks-2.6.1/lib/octopress-hooks.rb:169:in `reset'
from /usr/local/lib/ruby/gems/2.2.0/gems/octopress-hooks-2.6.1/lib/octopress-hooks.rb:169:in `reset'
from /usr/local/lib/ruby/gems/2.2.0/gems/octopress-hooks-2.6.1/lib/octopress-hooks.rb:169:in `reset'
from /usr/local/lib/ruby/gems/2.2.0/gems/octopress-hooks-2.6.1/lib/octopress-hooks.rb:169:in `reset'
from /usr/local/lib/ruby/gems/2.2.0/gems/octopress-hooks-2.6.1/lib/octopress-hooks.rb:169:in `reset'
from /usr/local/lib/ruby/gems/2.2.0/gems/octopress-hooks-2.6.1/lib/octopress-hooks.rb:169:in `reset'
from /usr/local/lib/ruby/gems/2.2.0/gems/octopress-hooks-2.6.1/lib/octopress-hooks.rb:169:in `reset'
from /usr/local/lib/ruby/gems/2.2.0/gems/octopress-hooks-2.6.1/lib/octopress-hooks.rb:169:in `reset'
... 10066 levels...
from /usr/local/lib/ruby/gems/2.2.0/gems/mercenary-0.3.5/lib/mercenary.rb:19:in `program'
from /usr/local/lib/ruby/gems/2.2.0/gems/jekyll-3.0.0/bin/jekyll:17:in `<top (required)>'
from /usr/local/bin/jekyll:23:in `load'
from /usr/local/bin/jekyll:23:in `<main>'
我尝试使用octopress new blog进行全新安装。我正在运行OSX Yosemite。这是我的Gemfile：
source "https://rubygems.org"
gem 'octopress', '~> 3.0'
group :jekyll_plugins do
gem 'jekyll-sitemap'
gem 'octopress-asset-pipeline'
end
当我删除'octopress-asset-pipeline'时，它构建得很好。出了什么问题？感谢
编辑：我已经将'octopress-hooks'添加到我的Gemfile中，我不会再出现这个错误，而是我得到了这个：Configuration file: /Users/robcrocombe/Documents/octopress/test/_config.yml
Source: /Users/robcrocombe/Documents/octopress/test
Destination: /Users/robcrocombe/Documents/octopress/test/_site
Incremental build: disabled. Enable with --incremental
Generating...
Liquid Exception: no implicit conversion of nil into String in _posts/2015-10-28-welcome-to-jekyll.markdown
Liquid Exception: no implicit conversion of nil into String in _posts/2015-10-28-welcome-to-jekyll.markdown
/usr/local/lib/ruby/gems/2.2.0/gems/jekyll-3.0.0/lib/jekyll.rb:157:in `expand_path': no implicit conversion of nil into String (TypeError)
from /usr/local/lib/ruby/gems/2.2.0/gems/jekyll-3.0.0/lib/jekyll.rb:157:in `sanitized_path'
from /usr/local/lib/ruby/gems/2.2.0/gems/jekyll-3.0.0/lib/jekyll/site.rb:374:in `block in in_source_dir'
from /usr/local/lib/ruby/gems/2.2.0/gems/jekyll-3.0.0/lib/jekyll/site.rb:373:in `each'
from /usr/local/lib/ruby/gems/2.2.0/gems/jekyll-3.0.0/lib/jekyll/site.rb:373:in `reduce'
from /usr/local/lib/ruby/gems/2.2.0/gems/jekyll-3.0.0/lib/jekyll/site.rb:373:in `in_source_dir'
from /usr/local/lib/ruby/gems/2.2.0/gems/jekyll-3.0.0/lib/jekyll/liquid_renderer.rb:16:in `file'
from /usr/local/lib/ruby/gems/2.2.0/gems/jekyll-3.0.0/lib/jekyll/renderer.rb:105:in `render_liquid'
from /usr/local/lib/ruby/gems/2.2.0/gems/octopress-hooks-2.6.1/lib/octopress-hooks.rb:311:in `render_liquid'
from /usr/local/lib/ruby/gems/2.2.0/gems/jekyll-3.0.0/lib/jekyll/renderer.rb:60:in `run'
from /usr/local/lib/ruby/gems/2.2.0/gems/octopress-hooks-2.6.1/lib/octopress-hooks.rb:306:in `run'
from /usr/local/lib/ruby/gems/2.2.0/gems/jekyll-3.0.0/lib/jekyll/site.rb:171:in `block (2 levels) in render'
from /usr/local/lib/ruby/gems/2.2.0/gems/jekyll-3.0.0/lib/jekyll/site.rb:169:in `each'
from /usr/local/lib/ruby/gems/2.2.0/gems/jekyll-3.0.0/lib/jekyll/site.rb:169:in `block in render'
from /usr/local/lib/ruby/gems/2.2.0/gems/jekyll-3.0.0/lib/jekyll/site.rb:168:in `each'
from /usr/local/lib/ruby/gems/2.2.0/gems/jekyll-3.0.0/lib/jekyll/site.rb:168:in `render'
from /usr/local/lib/ruby/gems/2.2.0/gems/octopress-hooks-2.6.1/lib/octopress-hooks.rb:197:in `render'
from /usr/local/lib/ruby/gems/2.2.0/gems/jekyll-3.0.0/lib/jekyll/site.rb:59:in `process'
from /usr/local/lib/ruby/gems/2.2.0/gems/jekyll-3.0.0/lib/jekyll/command.rb:28:in `process_site'
from /usr/local/lib/ruby/gems/2.2.0/gems/jekyll-3.0.0/lib/jekyll/commands/build.rb:60:in `build'
from /usr/local/lib/ruby/gems/2.2.0/gems/jekyll-3.0.0/lib/jekyll/commands/build.rb:35:in `process'
from /usr/local/lib/ruby/gems/2.2.0/gems/jekyll-3.0.0/lib/jekyll/commands/serve.rb:26:in `block (2 levels) in init_with_program'
from /usr/local/lib/ruby/gems/2.2.0/gems/mercenary-0.3.5/lib/mercenary/command.rb:220:in `call'
from /usr/local/lib/ruby/gems/2.2.0/gems/mercenary-0.3.5/lib/mercenary/command.rb:220:in `block in execute'
from /usr/local/lib/ruby/gems/2.2.0/gems/mercenary-0.3.5/lib/mercenary/command.rb:220:in `each'
from /usr/local/lib/ruby/gems/2.2.0/gems/mercenary-0.3.5/lib/mercenary/command.rb:220:in `execute'
from /usr/local/lib/ruby/gems/2.2.0/gems/mercenary-0.3.5/lib/mercenary/program.rb:42:in `go'
from /usr/local/lib/ruby/gems/2.2.0/gems/mercenary-0.3.5/lib/mercenary.rb:19:in `program'
from /usr/local/lib/ruby/gems/2.2.0/gems/jekyll-3.0.0/bin/jekyll:17:in `<top (required)>'
from /usr/local/bin/jekyll:23:in `load'
from /usr/local/bin/jekyll:23:in `<main>'
YAML'欢迎来到Jekyll'降价文件的前提是：
---
layout: post
title: "Welcome to Jekyll!"
date: 2015-10-28 19:23:27 -0700
categories: jekyll update
---