idp v3 authentication - The username you entered cannot be identified

[Cantor, Scott]

> I wouldn’t be surprised if that Velocity error were crippling the IdP as it went
> to load another view.  A lot of those implementations presume that if part is
> broken, all is broken, as a way to make sure configuration mistakes result in
> up-front failures rather than data leakage or worse.

That is not the case.

-- Scott