X-press-publishing POST series problem Step 43

Project link
Help video link

Hi guys,
I’m trying to create POST route for series and everything looks ok but test returning strange result. Also I’ve checked the get help video and my code is same like the video. I cannot understand am i doing something wrong or something is wrong with my test.
Next is my post route:

apiSeries.post('/', (req, res, next) => {

    if (!req.body.series) {
        res.sendStatus(400);
    }

    let name = req.body.series.name;
    let description = req.body.series.description;

    if (!name || !description) {
        res.sendStatus(400);
    }

    let sql = 'INSERT INTO Series (name, description) VALUES ($name, $description)';
    let values = {
        $name: name,
        $description: description,
    }
    db.run(sql, values, function (error) {
        if (error) {
            next(error);
        } else {
            db.get(`SELECT * FROM Series WHERE Series.id = ${this.lastID}`, (error, series) => {
                if (error) {
                    res.sendStatus(500);
                }
                res.status(201).json({ series: series });
            });
        }
    });
});

And this is the result from test:


Normally the result shows assertation lines where it is not passing. My post test starts from line 553.
Here it shows line 268 on anotrher file…