Response needs to be...

[ivo welch]

tiny suggestion.  right now, the error is

Response needs to be 3 element array, or 2 element in streaming at /Library/Perl/5.18/Plack/Middleware/Lint.pm line 112

it would be nice if it could be a little more verbose and also state what it is at the moment.  'right now, it is a 1-element array', or even

Response needs to be 3 element array [code,header,content], or 2 element [  ] in streaming, not a 1 element array