Jekyll serve error: implicit conversion of nil to String

Question

I searched jekyll with this error. It seems that a ruby ​​error occurs when the pages are processed by jekyll, but I don't understand Ruby at all.

jekyll version 1.3.1

I even reinstall ruby ​​and jekyll, but the result does not change.

UPDATE :
This error disappeared after I degraded jekyll from 1.31 to 1.20
note: I created my jekyll 1.20 website so that it will not be built with 1.3.1? is this a major problem?

E: \ GitHub \ sample> jekyll serve --trace:

Configuration file: E:/GitHub/sample/_config.yml Source: E:/GitHub/sample Destination: E:/GitHub/sample/_site Generating... D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/page.rb:127:in `join': no implicit conversion of nil int o String (TypeError) from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/page.rb:127:in `relative_path' from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/page.rb:122:in `path' from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/generators/pagination.rb:118:in `pagination_candidate?' from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/generators/pagination.rb:77:in `block in template_page' from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/generators/pagination.rb:76:in `select' from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/generators/pagination.rb:76:in `template_page' from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/generators/pagination.rb:17:in `generate' from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/site.rb:229:in `block in generate' from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/site.rb:228:in `each' from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/site.rb:228:in `generate' from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/site.rb:38:in `process' from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/command.rb:18:in `process_site' from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/commands/build.rb:23:in `build' from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/commands/build.rb:7:in `process' from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/bin/jekyll:97:in `block (2 levels) in <top (required)>' from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/commander-4.1.5/lib/commander/command.rb:180:in `call' from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/commander-4.1.5/lib/commander/command.rb:180:in `call' from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/commander-4.1.5/lib/commander/command.rb:155:in `run' from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/commander-4.1.5/lib/commander/runner.rb:402:in `run_active_command' from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/commander-4.1.5/lib/commander/runner.rb:78:in `run!' from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/commander-4.1.5/lib/commander/delegates.rb:7:in `run!' from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/commander-4.1.5/lib/commander/import.rb:10:in `block in <top (required)>' 

update test case
test repo
Work fine from 1.20 to 1.30 and are broken from 1.3.1 to 1.4.3.

Answer 1

Your ArchivePage#initialize does not set the required attributes.

From Jekyll page.rb :

 def initialize(site, base, dir, name) @site = site @base = base @dir = dir @name = name self.process(name) self.read_yaml(File.join(base, dir), name) end 

@dir and @month needed to determine the relative path of a page when preparing site generation. Set these two attributes in ArchivePage#initialize and it will work again. (Tested with 1.3.1)