1. The `CONTRIBUTING.md` file does not exist in the `.github` folder, causing a 404 error when clicking [CONTRIBUTING in the README](https://github.com/toss/granite#contributing). 2. The `/usage/query-param/query-param-required.gif` file in the document doesn't exist, so an [alternate image](https://www.granite.run/guides/granite-router/params.html#validating-parameters) is displayed.