Photos.framework: Cann't save remote video

Hi All

Just try to save remote video but all time get error: Error Domain=NSCocoaErrorDomain Code=-1 "(null)"

Xcode 7.0.1.

iPhone 4s with iOS 9.0.2

[[[NSURLSession sharedSession] downloadTaskWithURL:[NSURL URLWithString:@"<url to file>"] completionHandler:^(NSURL * _Nullable location, NSURLResponse * _Nullable response, NSError * _Nullable error) {
    [PHPhotoLibrary requestAuthorization:^( PHAuthorizationStatus status ) {
        if ( status == PHAuthorizationStatusAuthorized ) {
            // Save the movie file to the photo library and cleanup.
            [[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
                // In iOS 9 and later, it's possible to move the file into the photo library without duplicating the file data.
                // This avoids using double the disk space during save, which can make a difference on devices with limited free disk space.
                if ( [PHAssetResourceCreationOptions class] ) {
                    PHAssetResourceCreationOptions *options = [[PHAssetResourceCreationOptions alloc] init];
                    options.shouldMoveFile = YES;
                    PHAssetCreationRequest *changeRequest = [PHAssetCreationRequest creationRequestForAsset];
                    [changeRequest addResourceWithType:PHAssetResourceTypeVideo fileURL:location options:options];
                }
                else {
                    [PHAssetChangeRequest creationRequestForAssetFromVideoAtFileURL:location];
                }
            } completionHandler:^( BOOL success, NSError *error ) {
                if ( ! success ) {
                    NSLog( @"Could not save movie to photo library: %@", error );
                }
            }];
        }
        else {
        }
    }];
}] resume];

Could someone help me? What did I do wrong?