error @2015-09-24 09:06:31> Route exception: Undef did not pass type constraint "Str" (in $args->{"name"}) at (eval 663) line 192
    "Str" is a subtype of "Value"
    "Value" is a subtype of "Defined"
    Undef did not pass type constraint "Defined" (in $args->{"name"})
    "Defined" is defined as: (defined($_)) in /home/user/perl5.22.0/lib/site_perl/5.22.0/Dancer2/Core/App.pm l. 1276

I don't see this on my development machine and so far I have no idea where to look.

Before I go down the rabbit hole trying to find the differences and the source of the problem,
I wonder if anyone has encountered this.

Dancer2 0.162   on both machines:

dev using plackup 1.0037

prod using Starman 0.4014

Dancer2::Plugin::Auth::Extensible 0.401

regards

   Gabor