1.- Create a new site with title: HTTP/2 (it could be anything with slash in the middle)
2.- Add lessons and resources tools to the site.
3.- Go to resources an create a folder with some files.
4.- Go to lessons and add content: add resource folder.
5.- Choose the folder and save.
6.- The folder content must be listed in lessons.
Description
If your site has a slash "/" in the title the add resource folder in lessons will fail.