Timeslaps and API Requests error

if (existingActivity) {
                const updatedActivity = await prismadb.activity.update({
                    where: { id: existingActivity.id },
                    data: {
                        timeslaps: existingActivity.timeslaps + timeslaps,
                        updatedAt
                    }
                });
                return res.status(200).json(updatedActivity);
            } else {
                const newActivity = await prismadb.activity.create({
                    data: {
                        title,
                        timeslaps,
                        isProductive,
                        createdAt,
                        updatedAt,
                        user : {
                            connect : {
                                macAddress : macAddress
                            }
                        }
                    }
                });
                return res.status(200).json(newActivity);