wasm-pack-template | a template for starting a rust-wasm project to be

You are probably facing with a submodule.
Your www folder is pointing to another git repository.

Please check in Github, if beside the folder name you have an hash, something like: www @ a773f5e.

If this is correct, you should have also a file named .gitmodules in the root of the project.

You can initialize and clone the submobule repository with the command: git submodule update --init

Edit

This is a gitlink.

Typing git ls-tree HEAD www you should see the special mode 160000 at the very left. It is recorded from git as a submodule, but it isn't.

To recover you need to:

1. remove from the index the gitlink: git rm --cached www
   This command won't delete your files or your changes from the disk, just from the git's working index.
2. delete the .git folder: rm -fr www/.git
3. add the www folder to the index: git add www
4. commit and push

Now your www folder should act as a normal folder.