jekyll 3.8.6 | Error: Liquid error (line 18): comparison of NilClass with String failed

[stefanstranger]

When running bash ./tools/run.sh on my Windows 10 within WSL Debian I get the following error:

jekyll 3.8.6 | Error: Liquid error (line 18): comparison of NilClass with String failed

Detailed info:

Liquid Exception: Liquid error (line 18): comparison of NilClass with String failed in tabs/categories.md

Regards,
Stefan

[cotes2020]

Sorry to tell you that this doesn't seem right. The Jekyll 3.8.6 on WSL Debian works fine:

• Logs:

cotes@C-E3:~/GitRepos/jekyll-theme-chirpy$ cat /etc/os-release
PRETTY_NAME="Debian GNU/Linux 10 (buster)"
NAME="Debian GNU/Linux"
VERSION_ID="10"
VERSION="10 (buster)"
VERSION_CODENAME=buster
ID=debian
HOME_URL="https://www.debian.org/"
SUPPORT_URL="https://www.debian.org/support"
BUG_REPORT_URL="https://bugs.debian.org/"

cotes@C-E3:~/GitRepos/jekyll-theme-chirpy$ jekyll -v
The dependency tzinfo-data (>= 0) will be unused by any of the platforms Bundler is installing for. Bundler is installing for ruby but the dependency is only for x86-mingw32, x86-mswin32, x64-mingw32, java. To add those platforms to the bundle, run `bundle lock --add-platform x86-mingw32 x86-mswin32 x64-mingw32 java`.
jekyll 3.8.6

cotes@C-E3:~/GitRepos/jekyll-theme-chirpy$ ./tools/run.sh
[INFO] Succeed! 3 category-pages created.
[INFO] Succeed! 4 tag-pages created.
[INFO] Success to update lastmod for 4 post(s).
$ bundle exec jekyll s
Configuration file: /home/cotes/GitRepos/jekyll-theme-chirpy/.container/_config.yml
            Source: /home/cotes/GitRepos/jekyll-theme-chirpy/.container
       Destination: /home/cotes/GitRepos/jekyll-theme-chirpy/.container/_site
 Incremental build: disabled. Enable with --incremental
      Generating...
                    done in 2.768 seconds.
                    Auto-regeneration may not work on some Windows versions.
                    Please see: https://github.com/Microsoft/BashOnWindows/issues/216
                    If it does not work, please upgrade Bash on Windows or run Jekyll with --no-watch.
 Auto-regeneration: enabled for '/home/cotes/GitRepos/jekyll-theme-chirpy/.container'
    Server address: http://127.0.0.1:4000/
  Server running... press ctrl-c to stop.

• Snapshot
  

[stefanstranger]

Thanks for your investigation. I will again try to figure out why I get the error message.

Regards,
Stefan

[cotes2020]

Sorry for the invalid tag. This bug appears when a post has only one category, now it has been fixed at e87e1f5.