几天来一直试图理解这次崩溃。对于某些用户(随机，操作系统10.14/10.14.1)应用程序在第一次加载时崩溃。Crashed:com.apple.main-threadEXC_BAD_ACCESSKERN_INVALID_ADDRESS0x0000000000000000-[NSCollectionViewDatalayoutAttributesForItemAtIndexPath:]Crashed:com.apple.main-thread0UIFoundation0x7fff7ac71c6a-[NSCollectionViewDatalayoutAttributesForItem