App crash with error unrecognized selector sent to instance

Hi,

App crash with error:

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 
'-[VideoW.MenuScene playerItemDidReachEnd:]: unrecognized selector sent to instance 0x7f92ee407090'
*** First throw call stack:
(
  0   CoreFoundation                      0x0000000102f9bc7b __exceptionPreprocess + 331
  1   libobjc.A.dylib                     0x000000010211dac5 objc_exception_throw + 48
  2   CoreFoundation                      0x0000000102fba034 -[NSObject(NSObject) doesNotRecognizeSelector:] + 132
  3   CoreFoundation                      0x0000000102fa09c3 ___forwarding___ + 1443
  4   CoreFoundation                      0x0000000102fa27b8 _CF_forwarding_prep_0 + 120
  5   CoreFoundation                      0x0000000102eddb9c __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12
  6   CoreFoundation                      0x0000000102edd01f _CFXRegistrationPost + 447
  7   CoreFoundation                      0x0000000102edcd63 ___CFXNotificationPost_block_invoke + 227
  8   CoreFoundation                      0x0000000102fc0b62 -[_CFXNotificationRegistrar find:object:observer:enumerator:] + 1858
  9   CoreFoundation                      0x0000000102edc6b1 _CFXNotificationPost + 977
  10  AVFoundation                        0x0000000102b05055 __avplayeritem_fpItemNotificationCallback_block_invoke + 5586
  11  libdispatch.dylib                   0x0000000106a82d7f _dispatch_call_block_and_release + 12
  12  libdispatch.dylib                   0x0000000106a83db5 _dispatch_client_callout + 8
  13  libdispatch.dylib                   0x0000000106a91080 _dispatch_main_queue_callback_4CF + 1540
  14  CoreFoundation                      0x0000000102f02e59 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9
  15  CoreFoundation                      0x0000000102efd506 __CFRunLoopRun + 2310
  16  CoreFoundation                      0x0000000102efc8b2 CFRunLoopRunSpecific + 626
  17  GraphicsServices                    0x00000001091fa2fe GSEventRunModal + 65
  18  UIKitCore                           0x000000010ef695f5 UIApplicationMain + 140
  19  VideoWallpaper                      0x000000010179f9cb main + 75
  20  libdyld.dylib                       0x0000000106af8771 start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException

Code:

func playVideo(filename: String) {
        let path = Bundle.main.path(forResource: filename, ofType:"mp4")!
        player = AVPlayer(url: NSURL(fileURLWithPath: path) as URL)
       
        playerLayer = AVPlayerLayer(player: player)
        playerLayer.frame = CGRect(x: 880, y: 270, width: 960, height: 540)
        scene!.view!.layer.addSublayer(playerLayer)
       
        player.actionAtItemEnd = .none
        player.play()
       
        DispatchQueue.main.async {
            NotificationCenter.default.addObserver(self,
                                                   selector: Selector(("playerItemDidReachEnd:")),
                name: NSNotification.Name.AVPlayerItemDidPlayToEndTime ,
                object: self.player.currentItem)
        }
    }

func playerItemDidReachEnd(notification: NSNotification) {
        print("repeating...")
       
        let seconds : Int64 = 0
        let preferredTimeScale : Int32 = 1
        let seekTime : CMTime = CMTimeMake(value: seconds, timescale: preferredTimeScale)
       
        player.seek(to: seekTime)
        player.play()
    }

Don't understand what's wrong...