Add to my template
% use Mojolicious;
% my $m = Mojolicious->new;
% $m->plugin('DefaultHelpers');

after start:
...
[Thu Mar 20 16:05:25 2014] [debug] Helper "current_route" already exists, replacing.
[Thu Mar 20 16:05:25 2014] [debug] Helper "dumper" already exists, replacing.
[Thu Mar 20 16:05:25 2014] [debug] Helper "include" already exists, replacing.
...


But still

Undefined subroutine &Mojo::Template::SandBox::include called at


In my template its:
%= include('offer.xml.ep')

or

String found where operator expected at
when

%= include 'offer.xml.ep'