`document_url_regex': undefined method `each' for nil:NilClass (NoMethodError)` with jekyll-polyglot-1.5.0 / jekyll 4.0.1

[kylekirkby]

Hi @untra,

As requested :)

We're using a custom docker container we've built for building our multiple Jekyll sites.

This is the entry script in the container where you can see jekyll doctor is being executed prior to building the site.

https://github.com/linaro-its/jekyll-build-container/blob/master/build-site.sh

This is what the build-site.sh script looks like that I'm running below (not to be confused with the build-site.sh entry script 🤦🏼‍♂️

https://github.com/Linaro/website/blob/master/build-site.sh

JEKYLLSITEBUILD="latest" JEKYLL_ACTION=serve JEKYLL_PORT=4000 ./build-site.sh -V --trace -V
Single-repo site - proceeding with normal processing.
Validating source files
Configuration file: /srv/source/_config.yml
Configuration file: /srv/source/_config-production.yml
 Theme Config file: /var/lib/gems/2.7.0/gems/linaro-jekyll-theme-5.0.1/_config.yml
jekyll 4.0.1 | Error:  undefined method `each' for nil:NilClass
Traceback (most recent call last):
        34: from /usr/local/bin/bundle:23:in `<main>'
        33: from /usr/local/bin/bundle:23:in `load'
        32: from /usr/lib/ruby/gems/2.7.0/gems/bundler-2.1.2/libexec/bundle:34:in `<top (required)>'
        31: from /usr/lib/ruby/2.7.0/bundler/friendly_errors.rb:123:in `with_friendly_errors'
        30: from /usr/lib/ruby/gems/2.7.0/gems/bundler-2.1.2/libexec/bundle:46:in `block in <top (required)>'
        29: from /usr/lib/ruby/2.7.0/bundler/cli.rb:24:in `start'
        28: from /usr/lib/ruby/2.7.0/bundler/vendor/thor/lib/thor/base.rb:476:in `start'
        27: from /usr/lib/ruby/2.7.0/bundler/cli.rb:30:in `dispatch'
        26: from /usr/lib/ruby/2.7.0/bundler/vendor/thor/lib/thor.rb:399:in `dispatch'
        25: from /usr/lib/ruby/2.7.0/bundler/vendor/thor/lib/thor/invocation.rb:127:in `invoke_command'
        24: from /usr/lib/ruby/2.7.0/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
        23: from /usr/lib/ruby/2.7.0/bundler/cli.rb:476:in `exec'
        22: from /usr/lib/ruby/2.7.0/bundler/cli/exec.rb:28:in `run'
        21: from /usr/lib/ruby/2.7.0/bundler/cli/exec.rb:63:in `kernel_load'
        20: from /usr/lib/ruby/2.7.0/bundler/cli/exec.rb:63:in `load'
        19: from /usr/local/bin/jekyll:23:in `<top (required)>'
        18: from /usr/local/bin/jekyll:23:in `load'
        17: from /var/lib/gems/2.7.0/gems/jekyll-4.0.1/exe/jekyll:15:in `<top (required)>'
        16: from /var/lib/gems/2.7.0/gems/mercenary-0.3.6/lib/mercenary.rb:19:in `program'
        15: from /var/lib/gems/2.7.0/gems/mercenary-0.3.6/lib/mercenary/program.rb:42:in `go'
        14: from /var/lib/gems/2.7.0/gems/mercenary-0.3.6/lib/mercenary/command.rb:220:in `execute'
        13: from /var/lib/gems/2.7.0/gems/mercenary-0.3.6/lib/mercenary/command.rb:220:in `each'
        12: from /var/lib/gems/2.7.0/gems/mercenary-0.3.6/lib/mercenary/command.rb:220:in `block in execute'
        11: from /var/lib/gems/2.7.0/gems/jekyll-4.0.1/lib/jekyll/commands/doctor.rb:17:in `block (2 levels) in init_with_program'
        10: from /var/lib/gems/2.7.0/gems/jekyll-4.0.1/lib/jekyll/commands/doctor.rb:25:in `process'
         9: from /var/lib/gems/2.7.0/gems/jekyll-4.0.1/lib/jekyll/site.rb:176:in `read'
         8: from /var/lib/gems/2.7.0/gems/jekyll-4.0.1/lib/jekyll/hooks.rb:101:in `trigger'
         7: from /var/lib/gems/2.7.0/gems/jekyll-4.0.1/lib/jekyll/hooks.rb:101:in `each'
         6: from /var/lib/gems/2.7.0/gems/jekyll-4.0.1/lib/jekyll/hooks.rb:102:in `block in trigger'
         5: from /var/lib/gems/2.7.0/gems/jekyll-polyglot-1.5.0/lib/jekyll/polyglot/hooks/coordinate.rb:4:in `block in <top (required)>'
         4: from /var/lib/gems/2.7.0/gems/jekyll-polyglot-1.5.0/lib/jekyll/polyglot/hooks/coordinate.rb:19:in `hook_coordinate'
         3: from /var/lib/gems/2.7.0/gems/jekyll-polyglot-1.5.0/lib/jekyll/polyglot/hooks/coordinate.rb:19:in `each'
         2: from /var/lib/gems/2.7.0/gems/jekyll-polyglot-1.5.0/lib/jekyll/polyglot/hooks/coordinate.rb:20:in `block in hook_coordinate'
         1: from /var/lib/gems/2.7.0/gems/jekyll-polyglot-1.5.0/lib/jekyll/polyglot/patches/jekyll/site.rb:127:in `coordinate_documents'
/var/lib/gems/2.7.0/gems/jekyll-polyglot-1.5.0/lib/jekyll/polyglot/patches/jekyll/site.rb:171:in `document_url_regex': undefined method `each' for nil:NilClass (NoMethodError)

Hoping you can shed some light on what's going on here 🤞🏼

Cheers!

Kyle

[untra]

So that last line of the stacktrace corresponds to here:

site.rb:171:in `document_url_regex': undefined method `each' for nil:NilClass (NoMethodError)

https://github.com/untra/polyglot/blob/master/lib/jekyll/polyglot/patches/jekyll/site.rb#L171
in this case ruby doesn't think @languages has been defined, which should come from the polyglot configuration
https://github.com/untra/polyglot#configuration

I would think your build process is not passing along the correct or full _config.yml ?

polyglot should probably handle missing input or configuration better fwiw

[kylekirkby]

I'm passing a valid _config.yml to jekyll doctor but I'm still getting the error. This is the exact yaml file I'm passing to bundle exec jekyll serve (which works fine) and bundle exec jekyll doctor (which doesn't).

title: Linaro
url: https://www.linaro.org
baseurl: ""
description: |-
  Linaro is a collaborative engineering organization consolidating and optimizing open source software and tools for the Arm architecture.
destination: _site
permalink: /:categories/:title/
theme: linaro-jekyll-theme
highlighter: rouge
markdown: kramdown
kramdown:
  input: GFM
  syntax_highlighter: rouge
encoding: utf-8
safe: false
livereload_ignore:
  - .asset_pipeline/assets/js/*.js
  - .asset_pipeline/assets/js/*.js.gz
exclude:
  - Gemfile
  - Gemfile.lock
  - .asset_pipeline
  - build-site.sh
  - check-links.sh
  - CODEOWNERS
  - README.md
  - .gitignore
  - .git
  - .asset-cache
  - _static-site
  - .sass-cache
  - staging.linaro.org
  - production.linaro.org
# Breadcrumb banner image
breadcrumb_banner: /assets/images/content/code_banner.jpg
# Toggle the animated navbar dropdown feature
# Navbar dropdowns will open on hover
hover_nav_dropdowns: true
# Set the class used to animate dropdowns e.g. fade-up / fade-down
nav_dropdowns_animation_class: fade-down
# The bootstrap breakpoint at which the navbars will expand
nav_expand_breakpoint: xl
sass:
  style: compressed
  load_paths:
    - assets/css
  sourcemap: "never"
plugins:
  - japr
  - jekyll_picture_tag
  - jekyll-tidy
collections:
  company:
    output: true
    permalink: /membership/:name/
  services:
    output: true
  themes:
    output: true
  core:
    output: true
    permalink: /:collection/:path/
  authors:
    output: true
    permalink: /author/:name/
  internships:
    output: true
    permalink: /careers/internships/:name/
liquid:
  error_mode: strict
defaults:
  - scope:
      path: ""
    values:
      image: /assets/images/social-media-image.png
  - scope:
      path: "_pages"
    values:
      layout: flow
  - scope:
      type: posts
      path: "_posts"
    values:
      layout: post
      is_post: true
      tags_enabled: true
      comments: false
      image: /assets/images/content/code_banner.jpg
      strap_image: /assets/images/content/code_banner.jpg
  - scope:
      path: ""
      type: "authors"
    values:
      layout: author
      sitemap: false
      image: /assets/images/social-media-image.png
  - scope:
      type: "services"
    values:
      layout: flow
      css_bundle: services
      js-package: services
      image: /assets/images/content/LinaroDSVertical.png
  - scope:
      type: "themes"
    values:
      layout: flow
      css_bundle: themes
      js-package: themes
      image: /assets/images/content/LinaroDSVertical.png
  - scope:
      path: "_posts/events"
    values:
      layout: event
      comments: false
      tags_enabled: false
      author: linaro
      permalink: /events/:title/
      categories: ["Events"]
  - scope:
      path: "_posts/events/resources"
    values:
      layout: resource-post
      comments: false
      tags_enabled: false
      author: linaro
      permalink: /events/:title/
      categories: ["event_resources"]
  - scope:
      path: "_posts/awards"
    values:
      author: linaro
      tags_enabled: false
      permalink: "/awards/5-years/:title/"
      comments: false
  - scope:
      path: "assets/**/*.pdf"
    values:
      sitemap: false
  - scope:
      path: "admin"
    values:
      sitemap: false
  - scope:
      path: app
    values:
      sitemap: false
  - scope:
      path: remote
    values:
      sitemap: false
  - scope:
      path: "_pages/projects/"
    values:
      sitemap: false
  - scope:
      path: ""
      type: "company"
    values:
      layout: flow
      flow:
        - row: container_row
          sections:
            - format: custom_include
              source: display_company_info.html
  - scope:
      type: "internships"
    values:
      layout: vacancy
  # - scope:
  #     path: "/sitemap.xml"
  #   values:
  #     redirect_from: /sitemap/
include: ["_pages"]
# ----------- THEME / WEBSITE CONFIG ---------------------
# Blog images/thumbs dir
blog_images_dir: assets/images/content/
# Email
email: contact@linaro.org
# Company Address
address:
  - Harston Mill
  - Royston Rd, Harston
  - Cambridge, United Kingdom
  - CB22 7GG
# Support for http2 preload features
http2_resources:
  - rel: preload
    as: font
    type: font/woff2
    crossorigin: true
    href: /assets/fonts/lato/Lato-regular.woff2
google_analytics:
  enabled: true
  code: GTM-XXXXX
  cookies:
    necessary:
      - name: cookieControl
        description: >
          This is used to control the display of the preferences pop up. Without this, we wouldn't know if you've clicked Accept!
      - name: cookieControlPrefs
        description: >
          This is used to store your cookie preferences. Without this we wouldn't know which cookies you want!
    marketing:
      - name: _ga
        description: >
          2 years - Used to distinguish users.
      - name: _gid
        description: >
          24 hours - Used to distinguish users.
      - name: _gat
        description: >
          1 minute - Used to throttle request rate.
      - name: HotJar
        description: >
          We use hotjar to help us understand how we can improve our end-user experience. For a list of cookies HotJar uses please see [https://help.hotjar.com/hc/en-us/articles/115011789248-Hotjar-Cookies#cookies-set-by-the-hotjar-script](https://help.hotjar.com/hc/en-us/articles/115011789248-Hotjar-Cookies#cookies-set-by-the-hotjar-script)
# Set the site-wide default social media share image.
social_media_share_image: /assets/images/social-media-image.png
# Set the default favicon
favicon: /assets/images/favicon.png
# Site Name - your brand name
name: Jumbo Jekyll Theme
# The blog filler element
blog_filler_element: blog/blog_filler_element.html
# Placeholder avatar
avatar_placeholder: /assets/images/avatar-placeholder.jpg
# Blog Post Image Placeholder
post_placeholder: /assets/images/content/linaro-logo.png
# Social Media Links
social_media_channels:
  github:
    url: https://github.com/Linaro
  linkedin:
    url: https://www.linkedin.com/company/1026961
  facebook:
    url: http://facebook.com/LinaroOrg
  youtube:
    url: https://www.youtube.com/linaroorg
  twitter:
    url: https://twitter.com/linaroorg
  instagram:
    url: https://instagram.com/linaroorg
# Disqus Comments Setup
disqus:
  enabled: false
  shortname: Linaro
# Edit on GitHub Settings
edit-on-github:
  enabled: true
  repo: https://www.github.com/Linaro/website
# Breadcrumb schema
breadcrumb_schema: true
# Shema.org settings used in the schema.html include.
schema:
  "@context": "https://schema.org"
  "@type": "Organization"
  "name": "Linaro"
  "url": "https://www.linaro.org"
  "email": "contact@linaro.org"
  "logo": "https://www.linaro.org/assets/images/content/linaro-logo.png"
  "contactPoint":
    "@type": "ContactPoint"
    "telephone": "01223 400060"
    "contactType": "customer service"
    "availableLanguage": "en"
  "sameAs": "https://www.linaro.org"
# FESS search label
search_label: Linaro
# ----------- JEKYLL PLUGINS ---------------------
# -------- jekyll-tidy --------
jekyll_tidy:
  # Toggle compression of HTML
  compress_html: true
  # JS Path added to exclude to stop errors.
  exclude: ["assets/**/*.js", "robots.txt", "admin/config.yml"]
# -------- jekyll_relative_links --------
jekyll_relative_links:
  process_all_collections: true
  verbose: 1
relative_links:
  enabled: true
  collections: false
# -------- jekyll_relative_links --------
readme_index:
  enabled: true
  remove_originals: false
# -------- jekyll_picture_tag --------
picture:
  nomarkdown: false
  suppress_warnings: true
  source: ""
  output: "../generated"
  relative_url: true
  disabled: false
# -------- japr --------
asset_pipeline:
  bundle: true
  compress: true
  output_path: assets/js
  gzip: true
# Jekyll-polyglot
i18n_enabled: true
languages: ["en", "ja"]
default_lang: "en"
exclude_from_localization:
  ["javascript", "images", "css", "public", "assets", "generated"]
parallel_localization: false

[kylekirkby]

Just for our sanity here is the stack trace when explicitly running jekyll doctor which is using the above Jekyll _config.yml file.

bundle exec jekyll doctor --trace
Configuration file: /home/god/Git/linaro.org/_config.yml
 Theme Config file: /home/god/.rvm/gems/ruby-2.6.6/gems/linaro-jekyll-theme-5.0.1/_config.yml
Traceback (most recent call last):
        21: from /home/god/.rvm/gems/ruby-2.6.6/bin/ruby_executable_hooks:22:in `<main>'
        20: from /home/god/.rvm/gems/ruby-2.6.6/bin/ruby_executable_hooks:22:in `eval'
        19: from /home/god/.rvm/gems/ruby-2.6.6/bin/jekyll:23:in `<main>'
        18: from /home/god/.rvm/gems/ruby-2.6.6/bin/jekyll:23:in `load'
        17: from /home/god/.rvm/gems/ruby-2.6.6/gems/jekyll-4.0.1/exe/jekyll:15:in `<top (required)>'
        16: from /home/god/.rvm/gems/ruby-2.6.6/gems/mercenary-0.3.6/lib/mercenary.rb:19:in `program'
        15: from /home/god/.rvm/gems/ruby-2.6.6/gems/mercenary-0.3.6/lib/mercenary/program.rb:42:in `go'
        14: from /home/god/.rvm/gems/ruby-2.6.6/gems/mercenary-0.3.6/lib/mercenary/command.rb:220:in `execute'
        13: from /home/god/.rvm/gems/ruby-2.6.6/gems/mercenary-0.3.6/lib/mercenary/command.rb:220:in `each'
        12: from /home/god/.rvm/gems/ruby-2.6.6/gems/mercenary-0.3.6/lib/mercenary/command.rb:220:in `block in execute'
        11: from /home/god/.rvm/gems/ruby-2.6.6/gems/jekyll-4.0.1/lib/jekyll/commands/doctor.rb:17:in `block (2 levels) in init_with_program'
        10: from /home/god/.rvm/gems/ruby-2.6.6/gems/jekyll-4.0.1/lib/jekyll/commands/doctor.rb:25:in `process'
         9: from /home/god/.rvm/gems/ruby-2.6.6/gems/jekyll-4.0.1/lib/jekyll/site.rb:176:in `read'
         8: from /home/god/.rvm/gems/ruby-2.6.6/gems/jekyll-4.0.1/lib/jekyll/hooks.rb:101:in `trigger'
         7: from /home/god/.rvm/gems/ruby-2.6.6/gems/jekyll-4.0.1/lib/jekyll/hooks.rb:101:in `each'
         6: from /home/god/.rvm/gems/ruby-2.6.6/gems/jekyll-4.0.1/lib/jekyll/hooks.rb:102:in `block in trigger'
         5: from /home/god/.rvm/gems/ruby-2.6.6/gems/jekyll-polyglot-1.5.0/lib/jekyll/polyglot/hooks/coordinate.rb:4:in `block in <top (required)>'
         4: from /home/god/.rvm/gems/ruby-2.6.6/gems/jekyll-polyglot-1.5.0/lib/jekyll/polyglot/hooks/coordinate.rb:19:in `hook_coordinate'
         3: from /home/god/.rvm/gems/ruby-2.6.6/gems/jekyll-polyglot-1.5.0/lib/jekyll/polyglot/hooks/coordinate.rb:19:in `each'
         2: from /home/god/.rvm/gems/ruby-2.6.6/gems/jekyll-polyglot-1.5.0/lib/jekyll/polyglot/hooks/coordinate.rb:20:in `block in hook_coordinate'
         1: from /home/god/.rvm/gems/ruby-2.6.6/gems/jekyll-polyglot-1.5.0/lib/jekyll/polyglot/patches/jekyll/site.rb:127:in `coordinate_documents'
/home/god/.rvm/gems/ruby-2.6.6/gems/jekyll-polyglot-1.5.0/lib/jekyll/polyglot/patches/jekyll/site.rb:171:in `document_url_regex': undefined method `each' for nil:NilClass (NoMethodError)

[untra]

when you're running this command jekyll doctor, is this in a totally fresh environment? eg. are you running jekyll build beforehand?

I actually didn't know about that jekyll doctor command and don't have a test for polyglot with it, but from what I understand it checks for missing paths / config in files, and the nature of a polyglot I think would expect the files have already been written out before it can check them?

jekyll doctor calls site process, but likely doesn't preprocess for the doctor command. I think that may be the bug here.

[kylekirkby]

when you're running this command jekyll doctor, is this in a totally fresh environment? eg. are you running jekyll build beforehand?

I'm not running jekyll build prior but do have built site folders in the site repo.

I actually didn't know about that jekyll doctor command and don't have a test for polyglot with it, but from what I understand it checks for missing paths / config in files, and the nature of a polyglot I think would expect the files have already been written out before it can check them?

jekyll doctor calls site process, but likely doesn't preprocess for the doctor command. I think that may be the bug here.

You definitely understand the inner workings of Jekyll/ruby better than I do so I'll trust you on this 😄

[kylekirkby]

https://github.com/jekyll/jekyll/blob/master/lib/jekyll/commands/doctor.rb

[danyeaw]

I ran in to this today with Jekyll 4.3.2:

(.venv) dan@localhost ~/P/gaphor.github.io (main)> bundle exec jekyll doctor
Configuration file: /home/dan/Projects/gaphor.github.io/_config.yml
jekyll 4.3.2 | Error:  undefined method `each' for nil:NilClass
Traceback (most recent call last):
        34: from /home/dan/.rbenv/versions/2.7.5/bin/bundle:23:in `<main>'
        33: from /home/dan/.rbenv/versions/2.7.5/bin/bundle:23:in `load'
        32: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/bundler-2.4.10/exe/bundle:33:in `<top (required)>'
        31: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/bundler-2.4.10/lib/bundler/friendly_errors.rb:117:in `with_friendly_errors'
        30: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/bundler-2.4.10/exe/bundle:45:in `block in <top (required)>'
        29: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/bundler-2.4.10/lib/bundler/cli.rb:28:in `start'
        28: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/bundler-2.4.10/lib/bundler/vendor/thor/lib/thor/base.rb:485:in `start'
        27: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/bundler-2.4.10/lib/bundler/cli.rb:34:in `dispatch'
        26: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/bundler-2.4.10/lib/bundler/vendor/thor/lib/thor.rb:392:in `dispatch'
        25: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/bundler-2.4.10/lib/bundler/vendor/thor/lib/thor/invocation.rb:127:in `invoke_command'
        24: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/bundler-2.4.10/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
        23: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/bundler-2.4.10/lib/bundler/cli.rb:492:in `exec'
        22: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/bundler-2.4.10/lib/bundler/cli/exec.rb:23:in `run'
        21: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/bundler-2.4.10/lib/bundler/cli/exec.rb:58:in `kernel_load'
        20: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/bundler-2.4.10/lib/bundler/cli/exec.rb:58:in `load'
        19: from /home/dan/.rbenv/versions/2.7.5/bin/jekyll:23:in `<top (required)>'
        18: from /home/dan/.rbenv/versions/2.7.5/bin/jekyll:23:in `load'
        17: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/jekyll-4.3.2/exe/jekyll:15:in `<top (required)>'
        16: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/mercenary-0.4.0/lib/mercenary.rb:21:in `program'
        15: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/mercenary-0.4.0/lib/mercenary/program.rb:44:in `go'
        14: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `execute'
        13: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `each'
        12: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `block in execute'
        11: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/jekyll-4.3.2/lib/jekyll/commands/doctor.rb:17:in `block (2 levels) in init_with_program'
        10: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/jekyll-4.3.2/lib/jekyll/commands/doctor.rb:25:in `process'
         9: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/jekyll-4.3.2/lib/jekyll/site.rb:183:in `read'
         8: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/jekyll-4.3.2/lib/jekyll/hooks.rb:102:in `trigger'
         7: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/jekyll-4.3.2/lib/jekyll/hooks.rb:102:in `each'
         6: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/jekyll-4.3.2/lib/jekyll/hooks.rb:103:in `block in trigger'
         5: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/jekyll-polyglot-1.5.1/lib/jekyll/polyglot/hooks/coordinate.rb:4:in `block in <top (required)>'
         4: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/jekyll-polyglot-1.5.1/lib/jekyll/polyglot/hooks/coordinate.rb:19:in `hook_coordinate'
         3: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/jekyll-polyglot-1.5.1/lib/jekyll/polyglot/hooks/coordinate.rb:19:in `each'
         2: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/jekyll-polyglot-1.5.1/lib/jekyll/polyglot/hooks/coordinate.rb:20:in `block in hook_coordinate'
         1: from /home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/jekyll-polyglot-1.5.1/lib/jekyll/polyglot/patches/jekyll/site.rb:127:in `coordinate_documents'
/home/dan/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/jekyll-polyglot-1.5.1/lib/jekyll/polyglot/patches/jekyll/site.rb:171:in `document_url_regex': undefined method `each' for nil:NilClass (NoMethodError)

[untra]

This bug should be addressed in 1.7.0 . Please let me know if this is still a problem 👍