If your GitHub Pages code references a file that doesn't exist in your _includes directory, your GitHub Pages site will not build.
If you reference a file that doesn't exist in your _includes directory, you'll get an email that looks like this:
Subject: Page build failed
The page build failed with the following error:
A file was included in `example.html` that does not exist in your `_includes` directory
Troubleshooting a nonexistent file error
Tip: We strongly recommend running Jekyll locally so you can easily debug and fix build errors before pushing to GitHub. To learn more about troubleshooting options, see "Troubleshooting Jekyll builds."
- Use your favorite text editor to open the file mentioned in the build failure email.
- Search for the
includetag to see where you've referenced other files. For example:{% include example_header.html %}. - If you've referenced any files that aren't in the _includes directory of your GitHub Pages repository, you will need to copy or move them into the _includes directory. If the files don't exist at all, you will need to create them.
- Commit the changes and push them to your GitHub Pages repository to trigger another build on the server.

