Proect will not edit or remix

I am trying to use this as my starter kit: https://glitch.com/edit/#!/buildyourfirstwebsite but I can not remix or edit the project.

I get the following error:

Unknown: Server error

An unexpected error has occurred.

4 posts were merged into an existing topic: Unknown: Server error An unexpected error has occurred. undefined

2 posts were merged into an existing topic: Unknown: Server error An unexpected error has occurred. undefined

A post was merged into an existing topic: Unknown: Server error An unexpected error has occurred. undefined