完整的错误信息如下：
LinkChecker: [Warning]
done in 13.838 seconds.
Auto-regeneration: enabled for 'D:/WorkDir/Repository/GitHub/opensearch/documentation-website'
------------------------------------------------
Jekyll 4.2.1 Please append `--trace` to the `serve` command
for any additional information or backtrace.
------------------------------------------------
D:/DKits/Ruby/lib/ruby/gems/3.0.0/gems/jekyll-4.2.1/lib/jekyll/commands/serve/servlet.rb:3:in `require': cannot load such file -- webrick (LoadError)
from D:/DKits/Ruby/lib/ruby/gems/3.0.0/gems/jekyll-4.2.1/lib/jekyll/commands/serve/servlet.rb:3:in `<top (required)>'
from D:/DKits/Ruby/lib/ruby/gems/3.0.0/gems/jekyll-4.2.1/lib/jekyll/commands/serve.rb:179:in `require_relative'
from D:/DKits/Ruby/lib/ruby/gems/3.0.0/gems/jekyll-4.2.1/lib/jekyll/commands/serve.rb:179:in `setup'
from D:/DKits/Ruby/lib/ruby/gems/3.0.0/gems/jekyll-4.2.1/lib/jekyll/commands/serve.rb:100:in `process'
from D:/DKits/Ruby/lib/ruby/gems/3.0.0/gems/jekyll-4.2.1/lib/jekyll/command.rb:91:in `block in process_with_graceful_fail'
from D:/DKits/Ruby/lib/ruby/gems/3.0.0/gems/jekyll-4.2.1/lib/jekyll/command.rb:91:in `each'
from D:/DKits/Ruby/lib/ruby/gems/3.0.0/gems/jekyll-4.2.1/lib/jekyll/command.rb:91:in `process_with_graceful_fail'
from D:/DKits/Ruby/lib/ruby/gems/3.0.0/gems/jekyll-4.2.1/lib/jekyll/commands/serve.rb:86:in `block (2 levels) in init_with_program'
from D:/DKits/Ruby/lib/ruby/gems/3.0.0/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `block in execute'
from D:/DKits/Ruby/lib/ruby/gems/3.0.0/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `each'
from D:/DKits/Ruby/lib/ruby/gems/3.0.0/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `execute'
from D:/DKits/Ruby/lib/ruby/gems/3.0.0/gems/mercenary-0.4.0/lib/mercenary/program.rb:44:in `go'
from D:/DKits/Ruby/lib/ruby/gems/3.0.0/gems/mercenary-0.4.0/lib/mercenary.rb:21:in `program'
from D:/DKits/Ruby/lib/ruby/gems/3.0.0/gems/jekyll-4.2.1/exe/jekyll:15:in `<top (required)>'
from D:/DKits/Ruby/bin/jekyll:23:in `load'
from D:/DKits/Ruby/bin/jekyll:23:in `<main>'
问题和解决
根据官方的项目的说明：
这是因为：
从 Ruby 3.0 开始 webrick 已经不在绑定到 Ruby 中了，请参考链接： Ruby 3.0.0 Released 中的说明。
webrick 需要手动进行添加。
添加的命令为：
bundle add webrick
后就可以解决这个问题了。
https://www.ossez.com/t/jekyll-cannot-load-such-file-webrick-loaderror/13779