Please see reproduce steps:

step-1. current version

$ git log --oneline -p -1
601a49d Merge pull request #22 from dinever/admin_ui

step-2. Start dingo

go run main.go

step-3. Access and signup Dingo

http://localhost:8000/signup/

step-4. Logout

step-5. Go to sign up page

It returns not found page. (Even from http://localhost:8000/login to push SIGN UP, it shows not found page.)