Public signup for this instance is disabled. Go to our Self serve sign up page to request an account.
See below thread on list about the issue. Various suggestions are made for how to fix this:
https://lists.apache.org/thread.html/re7e658bd802a36e127d7fb168643fbddab9108d0ae1e4332e3c295bf%40%3Cdev.daffodil.apache.org%3E