Can't locate object method "new" via package "myapp::Upload_file" at
/lib/x86_64/pkg/perl-5.8.8/lib/site_perl/5.8.8/Workflow/Factory.pm line 546 (#1)

(F) You called a method correctly, and it correctly indicated a package
functioning as a class, but that package doesn't define that particular
method, nor does any of its base classes.  See perlobj.