does not have a reuseIdentifier - cells must be retrieved by calling -dequeueReusableCellWithReuseIdentifier:forIndexPath swift

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 Problem:

While run the collectionview with headers it shows the below error

does not have a reuseIdentifier - cells must be retrieved by calling -dequeueReusableCellWithReuseIdentifier:forIndexPath


    func configCell(message: String, atIndex: IndexPath) -> UICollectionViewCell {

        return UICollectionViewCell()


    }



Solution:
Because it have no cell.That's why it shows exception

    func configCell(message: String, atIndex: IndexPath) -> UICollectionViewCell {

        guard let cell = self.CollView.dequeueReusableCell(withReuseIdentifier: NewCell.identifier, for: atIndex) as? NewCell else {

            return UICollectionViewCell()

        }

        return cell


    }




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