Crash when custom UICollectionViewLayout

[toanbv-fabbi]

I create UICollectionView with custom UICollectionViewLayout Call RestApi and update data with snapshot for CollectionViewDiffableDataSource and result var snapshot = DiffableDataSourceSnapshot<Section,Post>() let section = Section() snapshot.appendSections([section]) snapshot.appendItems(self.posts) self.dataSource.apply(snapshot) If I use UICollectionViewDataSource (default) instead then no error https://i.imgur.com/rl6FG9s.png

Environments

• version:

• Swift version: 5.1

• iOS version: 12

• Xcode version: 10.3

• Devices/Simulators: iPhone X

• CocoaPods/Carthage version:

[ra1028]

Sorry, I don't know anything because there is too little information.