There might seem to be other dupes like this, but this SO post is the closest with a hacky solution.
I got a theme that uses the tag plugin from here : http://charliepark.org/tags-in-jekyll/ Here is my site repo on github. It's hosted here : http://www.gideondsouza.com
Tags don't work online but work offline. On my local machine I see a _/site/tag/.. with folders for each tag. But this tag folder isn't generated on github? In fact I don't even see a _site folder, so maybe my understanding is off. Perhaps I need to install the github-pages gem?
I could probably fix it like in the SO post mentioned earlier, but this is hacky, I will always have to remember to copy the generated tags folder into the root.
Anything I'm missing?
Github pages only support selected plugins (see documentation here).
If you want to use your plugin, you have to generate locally and to push the _site content online.
来源：https://stackoverflow.com/questions/37430548/jekyll-tag-plugin-works-offline-but-not-on-github-pages