I can work around the problem by adding the following line to my 'docs/_config.yml' file:
config.active_record.yaml_column_permitted_classes = [Symbol] That's clearly not the right location for the setting (it's not YAML syntax), but I don't know where else to put it, and it works: $ jekyll clean WARNING: Error reading configuration. Using defaults (and options). Configuration file: (INVALID) /home/john/src/pub/www-status6/docs/_config.yml Cleaner: Nothing to do for /home/john/src/pub/www-status6/docs/_site. Cleaner: Nothing to do for /home/john/src/pub/www-status6/docs/.jekyll-metadata. Cleaner: Nothing to do for /home/john/src/pub/www-status6/docs/.jekyll-cache. Cleaner: Nothing to do for .sass-cache. $ jekyll doctor WARNING: Error reading configuration. Using defaults (and options). Configuration file: (INVALID) /home/john/src/pub/www-status6/docs/_config.yml Warning: You didn't set an URL in the config file, you may encounter problems with some plugins. Warning: Your site URL does not seem to be absolute, check the value of `url` in your config file. I can't find any way to get rid of the missing URL warning, but it doesn't seem to cause any problems locally nor with GitHub Pages. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2081599 Title: jekyll 4.3.2 | Error: Tried to load unspecified class: Symbol To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/jekyll/+bug/2081599/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs