Can not update or delete

[k1ife]

Hello!
There is something i can not understand with wrapper - it works perfect on insert, but i can not update or delete entries. Every time i try to update, i get same error:

etest=# UPDATE articles SET content='yeay it updates\!' WHERE title='foo';
ERROR:  Cannot transform anything else than mappings andsequences to rows
CONTEXT:  SQL statement "UPDATE articles_es SET
            title = NEW.title,
            content = NEW.content
        WHERE id = NEW.id"
PL/pgSQL function reindex_article() line 3 at SQL statement

PostgreSQL-9.6.1
postgresql-9.6-python-multicorn
ElasticSearch-5.2

Mapping:

index: 'wrap',
      body: {
             mappings: {
                          articles: {
                            properties: {
                              title: {
                                type: 'text'
                              },
                              content: {
                                type: 'text'
                              }
                            }
                          }
                        }
                      }

What am i doing wrong?