CollectionView-致命错误:索引超出范围-超出视图显示的单元格数

我遇到了CollectionView致命错误:使用UIRefreshControl重新加载数据时索引超出范围。

集合的配置如下:

override func numberOfSections(in collectionView: UICollectionView) -> Int {
    // #warning Incomplete implementation, return the number of sections
    return 1
}


override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    // #warning Incomplete implementation, return the number of items
    return cloudData.count
}

override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: reuseIdentifier, for: indexPath) as! DataViewCell

    // Configure the cell        
    cell.cloudDataPost = cloudData[indexPath.item]
    return cell
}

@objc func loadData() {
    cloudData = [CKRecord]()
    let publicData = CKContainer.default().publicCloudDatabase
    let predicate = NSPredicate(value: true)
    let query = CKQuery(recordType: "Data", predicate: predicate)
    query.sortDescriptors = [NSSortDescriptor(key: "creationDate", ascending: false)]
    publicWhisper.perform(query, inZoneWith: nil, completionHandler: { (results, error) in
        if let datos = results {
            self.cloudData = datos
            DispatchQueue.main.async {
                self.collectionView?.reloadData()
                self.refresh.endRefreshing()
            }
        }
    })
}

只要单元格的数量小于视图所能显示的数量,一切都可以正常工作。有了4个或7个单元格,我可以毫无问题地重新加载反收集视图,但当我添加另一个单元格时,会产生数组。count的单元格数超过了视图显示的单元格数,刷新时出现错误。

The error is this line

谢谢