Mojolicious::Lite app triggers internal Perl error from Mojo::Exception

00-reproduce.txt

run

  $ morbo minimal.pl

and then in your browser, call http://127.0.0.1:300/help/bla and you might get "panic: sv_setpvn called with negative strlen -2 at /home/moritz/perl5/perlbrew/perls/perl-5.18.1/lib/site_perl/5.18.1/Mojo/Exception.pm line 41."

$ mojo version
CORE
  Perl        (v5.18.1, linux)
  Mojolicious (4.41, Top Hat)

OPTIONAL
  EV 4.0+               (4.15)
  IO::Socket::IP 0.16+  (0.22)
  IO::Socket::SSL 1.75+ (1.953)

This version is up to date, have fun!

minimal.pl

use 5.014;
use warnings;

use Mojolicious::Lite;

app->secret('password123');

get '/help/:page' => sub {
    my $self = shift;
    $self->render('help/private-profile');
};


app->start();

__DATA__

@@ help/private-profile.html.ep
% title 'Help - What's the point of private profiles?'