Error when creating tag

[kuro610]

I tried to create a tag via /project///tags/create and the server responded with the following error:
DBIx::Class::Row::store_column(): No such column 'tag_group' on Coocook::Model::DB::Tag at constructor Coocook::Schema::Result::Tag::new (defined at lib/Coocook/Schema/Result/Tag.pm line 33) line 4