【发布时间】：2020-12-11 19:34:21
【问题描述】：
我目前正在将 Jekyll 博客迁移到新主题，现在在将我的网站推送到 GitHub 页面并使用 --safe 标志运行 Jekyll 网站时遇到了问题。
现在，Jekyll 站点在本地运行得非常好，但我在推送到 GitHub 页面时开始遇到问题。
作为一种调试措施，我阅读以确保 Jekyll 站点运行时不会出现 --safe 标志的问题，但它没有。
但是，我不确定这里的问题是什么。这是我使用bundle exec jekyll serve --safe --trace --verbose 运行它的输出：
Rendering: portfolio/index.md
Pre-Render Hooks: portfolio/index.md
Rendering Markup: portfolio/index.md
Rendering Layout: portfolio/index.md
Layout source: site
Liquid Exception: undefined method `map' for "/portfolio":String Did you mean? tap in /_layouts/portfolio.html
/Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/filters.rb:303:in `sort_input': undefined method `map' for "/portfolio":String (NoMethodError)
Did you mean? tap
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/filters.rb:243:in `sort'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/liquid-4.0.3/lib/liquid/strainer.rb:56:in `invoke'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/liquid-4.0.3/lib/liquid/context.rb:86:in `invoke'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/liquid-4.0.3/lib/liquid/variable.rb:84:in `block in render'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/liquid-4.0.3/lib/liquid/variable.rb:82:in `each'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/liquid-4.0.3/lib/liquid/variable.rb:82:in `inject'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/liquid-4.0.3/lib/liquid/variable.rb:82:in `render'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/liquid-4.0.3/lib/liquid/tags/assign.rb:26:in `render'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/liquid-4.0.3/lib/liquid/block_body.rb:103:in `render_node_to_output'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/liquid-4.0.3/lib/liquid/block_body.rb:91:in `render'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/liquid-4.0.3/lib/liquid/template.rb:208:in `block in render'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/liquid-4.0.3/lib/liquid/template.rb:242:in `with_profiling'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/liquid-4.0.3/lib/liquid/template.rb:207:in `render'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/liquid-4.0.3/lib/liquid/template.rb:220:in `render!'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/liquid_renderer/file.rb:30:in `block (2 levels) in render!'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/liquid_renderer/file.rb:42:in `measure_bytes'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/liquid_renderer/file.rb:29:in `block in render!'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/liquid_renderer/file.rb:49:in `measure_time'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/liquid_renderer/file.rb:28:in `render!'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/renderer.rb:126:in `render_liquid'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/renderer.rb:195:in `render_layout'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/renderer.rb:158:in `place_in_layouts'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/renderer.rb:88:in `render_document'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/renderer.rb:62:in `run'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/site.rb:479:in `render_regenerated'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/site.rb:472:in `block in render_pages'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/site.rb:471:in `each'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/site.rb:471:in `render_pages'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/site.rb:192:in `render'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/site.rb:71:in `process'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/command.rb:28:in `process_site'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/commands/build.rb:65:in `build'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/commands/build.rb:36:in `process'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/commands/serve.rb:93:in `block in start'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/commands/serve.rb:93:in `each'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/commands/serve.rb:93:in `start'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/lib/jekyll/commands/serve.rb:75:in `block (2 levels) in init_with_program'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/mercenary-0.3.6/lib/mercenary/command.rb:220:in `block in execute'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/mercenary-0.3.6/lib/mercenary/command.rb:220:in `each'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/mercenary-0.3.6/lib/mercenary/command.rb:220:in `execute'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/mercenary-0.3.6/lib/mercenary/program.rb:42:in `go'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/mercenary-0.3.6/lib/mercenary.rb:19:in `program'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/gems/jekyll-3.8.7/exe/jekyll:15:in `<top (required)>'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/bin/jekyll:23:in `load'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/bin/jekyll:23:in `<main>'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/bin/ruby_executable_hooks:24:in `eval'
from /Users/adammorgan/.rvm/gems/ruby-2.4.9/bin/ruby_executable_hooks:24:in `<main>'
阅读该跟踪，我知道问题正在发生here，但我不确定如何解决这个问题？ (repo link)
有什么想法吗？
【问题讨论】：