Add "octopress-genesis-them", do "jekyll build", then error "undefined method 'docs'..."

[seraph115]

#1. Error like this,
$ jekyll build
Configuration file: /Users/seraph/code/ruby-space/blog/_config.yml
Source: /Users/seraph/code/ruby-space/blog
Destination: /Users/seraph/code/ruby-space/blog/_site
Generating...
jekyll 2.5.3 | Error: undefined method 'docs' for [<Post: /2016/12/15/my-title>]:Array

2. Gemfile
source 'https://ruby.taobao.org/'
gem 'octopress', '~> 3.0.4'
group :jekyll_plugins do
gem 'octopress-genesis-theme'
end

3. _config.yml
post_ext: markdown
page_ext: html

post_layout: theme:post
page_layout: theme:page

titlecase: true

post_template: post
page_template: page
draft_template: draft

[admorgan]

I just started having the same issue. Have you found a work around?

[jilljenn]

Same here. Can't build my 3-year-old blog.

What is troublesome is, octopress is supposed to work with Jekyll 3 but because of another gem, we can't:

octopress-genesis-theme was resolved to 0.0.3, which depends on
  octopress-date-format (~> 2.0) was resolved to 2.0.2, which depends on
    jekyll (~> 2.0)

It would be nice to rescue this nice theme.