[Dbix-class] can't locate object method "union" when using DBIx::Class::Helper::ResultSet::SetOperations

[fREW Schmidt]

> Loaded component in the result class files:
>
> package MyApp::Schema::Result::GeneSetAnnotation;
> use base 'DBIx::Class::Core';
> __PACKAGE__->load_components(qw/Helper::ResultSet::SetOperations/);
>

This is your problem.  This is a Result*Set* component, and needs to be
loaded into a resultset, not the result.

-- =

fREW Schmidt
http://blog.afoolishmanifesto.com
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