video_identifier

error: 
2019-07-19 10:13:28.664850
[WARNING] aqueduct: PostgreSQLSeverity.error 42703: column t1.video_identifier does not exist  PostgreSQLSeverity.error 42703: column t1.video_identifier does not exist 

query:
..route('/authVids').linkFunction((Request request) async {
        final query = Query<Video>(context)
          ..join(set: (Video vid) => vid.hashtaggings)
              .join(object: (HashTagging tagging) => tagging.hashTag)
              .returningProperties((HashTag tag) => [tag.tag])
          ..join(set: (Video vid) => vid.shares)
          ..join(set: (Video vid) => vid.likes);
        final response = await query.fetch();

        return Response.ok(response);
      })

schemas:
                                        Table "public._hashtagging"
   Column   |            Type             | Collation | Nullable |                 Default                  
------------+-----------------------------+-----------+----------+------------------------------------------
 id         | bigint                      |           | not null | nextval('_hashtagging_id_seq'::regclass)
 identifier | text                        |           | not null | 
 createdat  | timestamp without time zone |           | not null | 
 video_id   | bigint                      |           |          | 
 hashtag_id | bigint                      |           |          | 
 tag        | text                        |           | not null | 
Indexes:
    "_hashtagging_pkey" PRIMARY KEY, btree (identifier)
viziwizi=> \d _hashtag
                                        Table "public._hashtag"
   Column   |            Type             | Collation | Nullable |               Default                
------------+-----------------------------+-----------+----------+--------------------------------------
 id         | bigint                      |           | not null | nextval('_hashtag_id_seq'::regclass)
 identifier | text                        |           | not null | 
 tag        | text                        |           | not null | 
 createdat  | timestamp without time zone |           | not null | 
Indexes:
    "_hashtag_pkey" PRIMARY KEY, btree (identifier)
    "_hashtag_id_key" UNIQUE CONSTRAINT, btree (id)
    "_hashtag_id_idx" btree (id)
viziwizi=> \d _video
                                          Table "public._video"
     Column     |            Type             | Collation | Nullable |              Default               
----------------+-----------------------------+-----------+----------+------------------------------------
 id             | bigint                      |           | not null | nextval('_video_id_seq'::regclass)
 identifier     | text                        |           | not null | 
 createdby      | text                        |           | not null | 
 useridentifier | text                        |           | not null | 
 title          | text                        |           | not null | 
 content        | text                        |           |          | 
 public         | boolean                     |           | not null | true
 latitude       | double precision            |           |          |