##
...
my $mt = Mojo::Template->new( vars => 1, auto_escape => 1 );
my $data = ... # Not where the issues is.
my $code = "PERL";
print $q->header( -charset => 'utf-8' ), $mt->render_file( myfile.html.ep, { data => $data }, { test => $code } );
...
####
Global symbol "$test" requires explicit package name at myfile.html.ep