Fatal Exception: NSInternalInconsistencyException 0 CoreFoundation 0xa248 __exceptionPreprocess 1 libobjc.A.dylib 0x17a68 objc_exception_throw 2 CoreData 0x68c4 _PFFaultHandlerLookupRow 3 CoreData 0x2e82c _PF_FulfillDeferredFault 4 CoreData 0x8a354 _pvfk_header 5 CoreData 0xe4c78 _sharedIMPL_pvfk_core 6 PhotoLibraryServices 0x8b40c -[PLInternalResource scaleGivenAssetHasAdjustments:currentWidth:currentHeight:] 7 Photos 0x4d5bc ___presentFullResourceAtIndex_block_invoke 8 PhotoLibraryServices 0x1a6e94 __53-[PLManagedObjectContext _directPerformBlockAndWait:]_block_invoke 9 CoreData 0x82c20 developerSubmittedBlockToNSManagedObjectContextPerform 10 libdispatch.dylib 0x3fdc _dispatch_client_callout 11 libdispatch.dylib 0x13574 _dispatch_lane_barrier_sync_invoke_and_complete 12 CoreData 0x827a8 -[NSManagedObjectContext performBlockAndWait:] 13 PhotoLibraryServices 0x1a6e48 -[PLManagedObjectContext _directPerformBlockAndWait:] 14 PhotoLibraryServices 0x1a64e8 -[PLManagedObjectContext performBlockAndWait:] 15 Photos 0x4b09c _presentFullResourceAtIndex 16 Photos 0x3fc24 PHChooserListContinueEnumerating 17 Photos 0x22224 -[PHImageResourceChooser presentNextQualifyingResource] 18 Photos 0x21a8c -[PHImageRequest startRequest] 19 Photos 0x2118c -[PHMediaRequestContext _registerAndStartRequests:] 20 Photos 0xe8ec -[PHMediaRequestContext start] 21 Photos 0x10c64 -[PHImageManager runRequestWithContext:] 22 Photos 0x10aac -[PHImageManager requestNewCGImageForAsset:targetSize:contentMode:options:resultHandler:] 23 Photos 0x106d0 -[PHImageManager requestImageForAsset:targetSize:contentMode:options:resultHandler:]

We also encountered the same problem too. It occurs when we call -[PHImageManager requestImageForAsset:targetSize:contentMode:options:resultHandler:]