title: Swift / SKStoreProductViewController pushViewController results in (lldb)
body: <p>To push the user to the iTunes store for desired items I'm using the following function:</p>
  
  <pre><code>func openStoreProductWithiTunesItemIdentifier(identifier: String) {
  
      let storeViewController = SKStoreProductViewController()
      storeViewController.delegate = self
  
      let parameters = [ SKStoreProductParameterITunesItemIdentifier : identifier, SKStoreProductParameterAffiliateToken : ITUNES_AFFILIATE_ID]
      storeViewController.loadProductWithParameters(parameters) { [weak self] (loaded, error) -&gt; Void in
          if loaded {
  
              self!.navigationController?.pushViewControllerWithHandler(storeViewController, animated: true) {
  
                  LilithProgressHUD.hide() // custom progress hud
              }
          }
      }
  }
  
  extension UINavigationController {
  
      func pushViewControllerWithHandler(viewController: UIViewController, animated: Bool, completion: Void -&gt; Void) {
  
          CATransaction.begin()
          CATransaction.setCompletionBlock(completion)
          pushViewController(viewController, animated: animated)
          CATransaction.commit()
      }
  }
  </code></pre>
  
  <p>Called by </p>
  
  <pre><code>let trackID = "thisIsMyTrackID"
  openStoreProductWithiTunesItemIdentifier(trackID)
  </code></pre>
  
  <p>This results in </p>
  
  <p><a href="https://i.stack.imgur.com/kRh6y.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/kRh6y.png" alt="enter image description here"></a>
  <a href="https://i.stack.imgur.com/O9qwC.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/O9qwC.png" alt="enter image description here"></a>
  <a href="https://i.stack.imgur.com/hVk0T.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/hVk0T.png" alt="enter image description here"></a></p>
  
  <p>If I'm instead of:</p>
  
  <pre><code>self!.navigationController?.pushViewControllerWithHandler(storeViewController, animated: true) {
  
              LilithProgressHUD.hide() // custom progress hud
          }
  </code></pre>
  
  <p>Using:</p>
  
  <pre><code>self?.presentViewController(storeViewController, animated: true, completion: {
              LilithProgressHUD.hide() // custom progress hud
          })
  </code></pre>
  
  <p>, it is working. But I need the controller to push within the <code>navigationController</code> to fit the rest of the views and animations. What am I missing? Help is very appreciated.</p>
  
  <p>Backtrace as requested:</p>
  
  <pre><code>    (lldb) bt all
  * thread #1: tid = 0x9bb48, 0x000000018fcac524 libobjc.A.dylib`objc_exception_throw, queue = 'com.apple.main-thread', stop reason = breakpoint 1.2
      frame #0: 0x000000018fcac524 libobjc.A.dylib`objc_exception_throw
      frame #1: 0x0000000191274108 CoreFoundation`+[NSException raise:format:] + 116
      frame #2: 0x000000019dca04d0 StoreKit`-[SKStoreProductViewController _throwUnsupportedPresentationException] + 76
      frame #3: 0x000000019dc9ed24 StoreKit`-[SKStoreProductViewController willMoveToParentViewController:] + 108
      frame #4: 0x0000000197159174 UIKit`-[UIViewController _addChildViewController:performHierarchyCheck:notifyWillMove:] + 568
      frame #5: 0x000000019714f580 UIKit`-[UINavigationController pushViewController:transition:forceImmediate:] + 1220
      frame #6: 0x000000019714f06c UIKit`-[UINavigationController pushViewController:animated:] + 652
    * frame #7: 0x00000001000a32f4 cya`UINavigationController.pushViewControllerWithHandler(viewController=0x00000001028ae9c0, animated=true, completion=0x00000001000a35c4 cya`partial apply forwarder for reabstraction thunk helper from @callee_unowned @convention(block) () -&gt; (@unowned ()) to @callee_owned () -&gt; (@unowned ()) with unmangled suffix ".16" at UINavigationControllerExtensions.swift, self=0x0000000103844600) -&gt; ()) -&gt; () + 504 at UINavigationControllerExtensions.swift:24
      frame #8: 0x00000001000a3578 cya`@objc UINavigationController.pushViewControllerWithHandler(UIViewController, animated : Bool, completion : () -&gt; ()) -&gt; () + 196 at UINavigationControllerExtensions.swift:0
      frame #9: 0x00000001001b04f4 cya`DJProfileAsUserMusicTableVC.(loaded=true, error=nil, self=0x0000000102a358d0, storeViewController=0x00000001028ae9c0) -&gt; ()).(closure #1) + 416 at DJProfileAsUserMusicTableVC.swift:697
      frame #10: 0x00000001001b0654 cya`thunk + 56 at DJProfileAsUserMusicTableVC.swift:0
      frame #11: 0x00000001001b0714 cya`thunk + 36 at DJProfileAsUserMusicTableVC.swift:0
      frame #12: 0x00000001001b0804 cya`thunk + 80 at DJProfileAsUserMusicTableVC.swift:0
      frame #13: 0x000000019dc9fb84 StoreKit`-[SKStoreProductViewController _loadDidFinishWithResult:error:] + 92
      frame #14: 0x000000019127a160 CoreFoundation`__invoking___ + 144
      frame #15: 0x000000019116dc3c CoreFoundation`-[NSInvocation invoke] + 284
      frame #16: 0x0000000192e158bc FrontBoardServices`__FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__ + 36
      frame #17: 0x0000000192e15728 FrontBoardServices`-[FBSSerialQueue _performNext] + 176
      frame #18: 0x0000000192e15ad0 FrontBoardServices`-[FBSSerialQueue _performNextFromRunLoopSource] + 56
      frame #19: 0x0000000191222278 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 24
      frame #20: 0x0000000191221bc0 CoreFoundation`__CFRunLoopDoSources0 + 524
      frame #21: 0x000000019121f7c0 CoreFoundation`__CFRunLoopRun + 804
      frame #22: 0x000000019114e048 CoreFoundation`CFRunLoopRunSpecific + 444
      frame #23: 0x0000000192bd1198 GraphicsServices`GSEventRunModal + 180
      frame #24: 0x0000000197128628 UIKit`-[UIApplication _run] + 684
      frame #25: 0x0000000197123360 UIKit`UIApplicationMain + 208
      frame #26: 0x000000010020c08c cya`main + 144 at AppDelegate.swift:19
      frame #27: 0x00000001901305b8 libdyld.dylib`start + 4
  
    thread #3: tid = 0x9bbc9, 0x0000000190242a88 libsystem_kernel.dylib`__workq_kernreturn + 8
      frame #0: 0x0000000190242a88 libsystem_kernel.dylib`__workq_kernreturn + 8
      frame #1: 0x0000000190305188 libsystem_pthread.dylib`_pthread_wqthread + 968
      frame #2: 0x0000000190304db4 libsystem_pthread.dylib`start_wqthread + 4
  
    thread #4: tid = 0x9bbca, 0x0000000190304db0 libsystem_pthread.dylib`start_wqthread
      frame #0: 0x0000000190304db0 libsystem_pthread.dylib`start_wqthread
  
    thread #7: tid = 0x9bbdc, 0x0000000190242314 libsystem_kernel.dylib`__semwait_signal + 8, name = 'gputools.smt_poll.0x17403cde0'
      frame #0: 0x0000000190242314 libsystem_kernel.dylib`__semwait_signal + 8
      frame #1: 0x000000019016027c libsystem_c.dylib`nanosleep + 212
      frame #2: 0x000000019016019c libsystem_c.dylib`usleep + 64
      frame #3: 0x00000001025adeb0 GPUToolsCore`smt_poll_thread_entry(void*) + 136
      frame #4: 0x0000000190307860 libsystem_pthread.dylib`_pthread_body + 240
      frame #5: 0x0000000190307770 libsystem_pthread.dylib`_pthread_start + 284
      frame #6: 0x0000000190304dbc libsystem_pthread.dylib`thread_start + 4
  
    thread #8: tid = 0x9bbef, 0x0000000190242314 libsystem_kernel.dylib`__semwait_signal + 8, name = 'gputools.smt_poll.0x170220020'
      frame #0: 0x0000000190242314 libsystem_kernel.dylib`__semwait_signal + 8
      frame #1: 0x000000019016027c libsystem_c.dylib`nanosleep + 212
      frame #2: 0x000000019016019c libsystem_c.dylib`usleep + 64
      frame #3: 0x00000001025adeb0 GPUToolsCore`smt_poll_thread_entry(void*) + 136
      frame #4: 0x0000000190307860 libsystem_pthread.dylib`_pthread_body + 240
      frame #5: 0x0000000190307770 libsystem_pthread.dylib`_pthread_start + 284
      frame #6: 0x0000000190304dbc libsystem_pthread.dylib`thread_start + 4
  
    thread #9: tid = 0x9bbf4, 0x000000019022416c libsystem_kernel.dylib`mach_msg_trap + 8, name = 'com.apple.uikit.eventfetch-thread'
      frame #0: 0x000000019022416c libsystem_kernel.dylib`mach_msg_trap + 8
      frame #1: 0x0000000190223fdc libsystem_kernel.dylib`mach_msg + 72
      frame #2: 0x0000000191221cec CoreFoundation`__CFRunLoopServiceMachPort + 192
      frame #3: 0x000000019121f908 CoreFoundation`__CFRunLoopRun + 1132
      frame #4: 0x000000019114e048 CoreFoundation`CFRunLoopRunSpecific + 444
      frame #5: 0x0000000191c5cb1c Foundation`-[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 304
      frame #6: 0x0000000191c7d60c Foundation`-[NSRunLoop(NSRunLoop) runUntilDate:] + 96
      frame #7: 0x0000000197a9dc7c UIKit`-[UIEventFetcher threadMain] + 136
      frame #8: 0x0000000191d5a50c Foundation`__NSThread__start__ + 1024
      frame #9: 0x0000000190307860 libsystem_pthread.dylib`_pthread_body + 240
      frame #10: 0x0000000190307770 libsystem_pthread.dylib`_pthread_start + 284
      frame #11: 0x0000000190304dbc libsystem_pthread.dylib`thread_start + 4
  
    thread #12: tid = 0x9bbfb, 0x000000019022416c libsystem_kernel.dylib`mach_msg_trap + 8, name = 'com.apple.NSURLConnectionLoader'
      frame #0: 0x000000019022416c libsystem_kernel.dylib`mach_msg_trap + 8
      frame #1: 0x0000000190223fdc libsystem_kernel.dylib`mach_msg + 72
      frame #2: 0x0000000191221cec CoreFoundation`__CFRunLoopServiceMachPort + 192
      frame #3: 0x000000019121f908 CoreFoundation`__CFRunLoopRun + 1132
      frame #4: 0x000000019114e048 CoreFoundation`CFRunLoopRunSpecific + 444
      frame #5: 0x000000019193bcec CFNetwork`+[NSURLConnection(Loader) _resourceLoadLoop:] + 336
      frame #6: 0x0000000191d5a50c Foundation`__NSThread__start__ + 1024
      frame #7: 0x0000000190307860 libsystem_pthread.dylib`_pthread_body + 240
      frame #8: 0x0000000190307770 libsystem_pthread.dylib`_pthread_start + 284
      frame #9: 0x0000000190304dbc libsystem_pthread.dylib`thread_start + 4
  
    thread #14: tid = 0x9bbfd, 0x000000019022416c libsystem_kernel.dylib`mach_msg_trap + 8, name = 'AVAudioSession Notify Thread'
      frame #0: 0x000000019022416c libsystem_kernel.dylib`mach_msg_trap + 8
      frame #1: 0x0000000190223fdc libsystem_kernel.dylib`mach_msg + 72
      frame #2: 0x0000000191221cec CoreFoundation`__CFRunLoopServiceMachPort + 192
      frame #3: 0x000000019121f908 CoreFoundation`__CFRunLoopRun + 1132
      frame #4: 0x000000019114e048 CoreFoundation`CFRunLoopRunSpecific + 444
      frame #5: 0x00000001aa8f1fe8 AVFAudio`GenericRunLoopThread::Entry(void*) + 164
      frame #6: 0x00000001aa917f14 AVFAudio`CAPThread::Entry(CAPThread*) + 84
      frame #7: 0x0000000190307860 libsystem_pthread.dylib`_pthread_body + 240
      frame #8: 0x0000000190307770 libsystem_pthread.dylib`_pthread_start + 284
      frame #9: 0x0000000190304dbc libsystem_pthread.dylib`thread_start + 4
  
    thread #17: tid = 0x9bc0f, 0x000000019022416c libsystem_kernel.dylib`mach_msg_trap + 8, name = 'com.squareup.SocketRocket.NetworkThread'
      frame #0: 0x000000019022416c libsystem_kernel.dylib`mach_msg_trap + 8
      frame #1: 0x0000000190223fdc libsystem_kernel.dylib`mach_msg + 72
      frame #2: 0x0000000191221cec CoreFoundation`__CFRunLoopServiceMachPort + 192
      frame #3: 0x000000019121f908 CoreFoundation`__CFRunLoopRun + 1132
      frame #4: 0x000000019114e048 CoreFoundation`CFRunLoopRunSpecific + 444
      frame #5: 0x0000000191c5cb1c Foundation`-[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 304
      frame #6: 0x00000001003f57ec cya`-[_FSRRunLoopThread main](self=0x00000001740918f0, _cmd=&lt;unavailable&gt;) + 252 at FSRWebSocket.m:1838
      frame #7: 0x0000000191d5a50c Foundation`__NSThread__start__ + 1024
      frame #8: 0x0000000190307860 libsystem_pthread.dylib`_pthread_body + 240
      frame #9: 0x0000000190307770 libsystem_pthread.dylib`_pthread_start + 284
      frame #10: 0x0000000190304dbc libsystem_pthread.dylib`thread_start + 4
  
    thread #18: tid = 0x9bc21, 0x000000019024223c libsystem_kernel.dylib`__select + 8, name = 'com.apple.CFSocket.private'
      frame #0: 0x000000019024223c libsystem_kernel.dylib`__select + 8
      frame #1: 0x0000000191228b84 CoreFoundation`__CFSocketManager + 640
      frame #2: 0x0000000190307860 libsystem_pthread.dylib`_pthread_body + 240
      frame #3: 0x0000000190307770 libsystem_pthread.dylib`_pthread_start + 284
      frame #4: 0x0000000190304dbc libsystem_pthread.dylib`thread_start + 4
  
    thread #19: tid = 0x9bc70, 0x0000000190242a88 libsystem_kernel.dylib`__workq_kernreturn + 8
      frame #0: 0x0000000190242a88 libsystem_kernel.dylib`__workq_kernreturn + 8
      frame #1: 0x000000019030536c libsystem_pthread.dylib`_pthread_wqthread + 1452
      frame #2: 0x0000000190304db4 libsystem_pthread.dylib`start_wqthread + 4
  
    thread #20: tid = 0x9bc77, 0x0000000190304db0 libsystem_pthread.dylib`start_wqthread
      frame #0: 0x0000000190304db0 libsystem_pthread.dylib`start_wqthread
  
    thread #21: tid = 0x9bc78, 0x0000000000000000
      frame #0: 0x0000000000000000
  (lldb)
  </code></pre>
  
  <p>Backtrace without exception breakpoint:</p>
  
  <pre><code>(lldb) bt all
  warning: could not load any Objective-C class information. This will significantly reduce the quality of type information available.
  * thread #1: tid = 0x9c221, 0x0000000190242014 libsystem_kernel.dylib`__pthread_kill + 8, queue = 'com.apple.main-thread', stop reason = signal SIGABRT
      frame #0: 0x0000000190242014 libsystem_kernel.dylib`__pthread_kill + 8
      frame #1: 0x0000000190309460 libsystem_pthread.dylib`pthread_kill + 112
      frame #2: 0x00000001901b63f4 libsystem_c.dylib`abort + 140
      frame #3: 0x000000018fc812d4 libc++abi.dylib`abort_message + 132
      frame #4: 0x000000018fc9ecc0 libc++abi.dylib`default_terminate_handler() + 304
      frame #5: 0x000000018fcac844 libobjc.A.dylib`_objc_terminate() + 124
      frame #6: 0x000000018fcac844 libobjc.A.dylib`_objc_terminate() + 124
      frame #7: 0x000000018fc9b66c libc++abi.dylib`std::__terminate(void (*)()) + 16
      frame #8: 0x000000018fc9b234 libc++abi.dylib`__cxa_rethrow + 144
      frame #9: 0x000000018fcac71c libobjc.A.dylib`objc_exception_rethrow + 44
      frame #10: 0x000000019114e0bc CoreFoundation`CFRunLoopRunSpecific + 560
      frame #11: 0x0000000192bd1198 GraphicsServices`GSEventRunModal + 180
      frame #12: 0x0000000197128628 UIKit`-[UIApplication _run] + 684
      frame #13: 0x0000000197123360 UIKit`UIApplicationMain + 208
    * frame #14: 0x00000001001e408c cya`main + 144 at AppDelegate.swift:19
      frame #15: 0x00000001901305b8 libdyld.dylib`start + 4
  
    thread #5: tid = 0x9c29d, 0x0000000190242a88 libsystem_kernel.dylib`__workq_kernreturn + 8
      frame #0: 0x0000000190242a88 libsystem_kernel.dylib`__workq_kernreturn + 8
      frame #1: 0x000000019030536c libsystem_pthread.dylib`_pthread_wqthread + 1452
      frame #2: 0x0000000190304db4 libsystem_pthread.dylib`start_wqthread + 4
  
    thread #7: tid = 0x9c2a7, 0x0000000190242314 libsystem_kernel.dylib`__semwait_signal + 8, name = 'gputools.smt_poll.0x174036a80'
      frame #0: 0x0000000190242314 libsystem_kernel.dylib`__semwait_signal + 8
      frame #1: 0x000000019016027c libsystem_c.dylib`nanosleep + 212
      frame #2: 0x000000019016019c libsystem_c.dylib`usleep + 64
      frame #3: 0x000000010257deb0 GPUToolsCore`smt_poll_thread_entry(void*) + 136
      frame #4: 0x0000000190307860 libsystem_pthread.dylib`_pthread_body + 240
      frame #5: 0x0000000190307770 libsystem_pthread.dylib`_pthread_start + 284
      frame #6: 0x0000000190304dbc libsystem_pthread.dylib`thread_start + 4
  
    thread #8: tid = 0x9c2b2, 0x0000000190242314 libsystem_kernel.dylib`__semwait_signal + 8, name = 'gputools.smt_poll.0x1740366c0'
      frame #0: 0x0000000190242314 libsystem_kernel.dylib`__semwait_signal + 8
      frame #1: 0x000000019016027c libsystem_c.dylib`nanosleep + 212
      frame #2: 0x000000019016019c libsystem_c.dylib`usleep + 64
      frame #3: 0x000000010257deb0 GPUToolsCore`smt_poll_thread_entry(void*) + 136
      frame #4: 0x0000000190307860 libsystem_pthread.dylib`_pthread_body + 240
      frame #5: 0x0000000190307770 libsystem_pthread.dylib`_pthread_start + 284
      frame #6: 0x0000000190304dbc libsystem_pthread.dylib`thread_start + 4
  
    thread #9: tid = 0x9c2b6, 0x000000019022416c libsystem_kernel.dylib`mach_msg_trap + 8, name = 'com.apple.uikit.eventfetch-thread'
      frame #0: 0x000000019022416c libsystem_kernel.dylib`mach_msg_trap + 8
      frame #1: 0x0000000190223fdc libsystem_kernel.dylib`mach_msg + 72
      frame #2: 0x0000000191221cec CoreFoundation`__CFRunLoopServiceMachPort + 192
      frame #3: 0x000000019121f908 CoreFoundation`__CFRunLoopRun + 1132
      frame #4: 0x000000019114e048 CoreFoundation`CFRunLoopRunSpecific + 444
      frame #5: 0x0000000191c5cb1c Foundation`-[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 304
      frame #6: 0x0000000191c7d60c Foundation`-[NSRunLoop(NSRunLoop) runUntilDate:] + 96
      frame #7: 0x0000000197a9dc7c UIKit`-[UIEventFetcher threadMain] + 136
      frame #8: 0x0000000191d5a50c Foundation`__NSThread__start__ + 1024
      frame #9: 0x0000000190307860 libsystem_pthread.dylib`_pthread_body + 240
      frame #10: 0x0000000190307770 libsystem_pthread.dylib`_pthread_start + 284
      frame #11: 0x0000000190304dbc libsystem_pthread.dylib`thread_start + 4
  
    thread #10: tid = 0x9c2b7, 0x0000000190242a88 libsystem_kernel.dylib`__workq_kernreturn + 8
      frame #0: 0x0000000190242a88 libsystem_kernel.dylib`__workq_kernreturn + 8
      frame #1: 0x000000019030536c libsystem_pthread.dylib`_pthread_wqthread + 1452
      frame #2: 0x0000000190304db4 libsystem_pthread.dylib`start_wqthread + 4
  
    thread #12: tid = 0x9c2bf, 0x000000019022416c libsystem_kernel.dylib`mach_msg_trap + 8, name = 'com.apple.NSURLConnectionLoader'
      frame #0: 0x000000019022416c libsystem_kernel.dylib`mach_msg_trap + 8
      frame #1: 0x0000000190223fdc libsystem_kernel.dylib`mach_msg + 72
      frame #2: 0x0000000191221cec CoreFoundation`__CFRunLoopServiceMachPort + 192
      frame #3: 0x000000019121f908 CoreFoundation`__CFRunLoopRun + 1132
      frame #4: 0x000000019114e048 CoreFoundation`CFRunLoopRunSpecific + 444
      frame #5: 0x000000019193bcec CFNetwork`+[NSURLConnection(Loader) _resourceLoadLoop:] + 336
      frame #6: 0x0000000191d5a50c Foundation`__NSThread__start__ + 1024
      frame #7: 0x0000000190307860 libsystem_pthread.dylib`_pthread_body + 240
      frame #8: 0x0000000190307770 libsystem_pthread.dylib`_pthread_start + 284
      frame #9: 0x0000000190304dbc libsystem_pthread.dylib`thread_start + 4
  
    thread #14: tid = 0x9c2c3, 0x000000019022416c libsystem_kernel.dylib`mach_msg_trap + 8, name = 'AVAudioSession Notify Thread'
      frame #0: 0x000000019022416c libsystem_kernel.dylib`mach_msg_trap + 8
      frame #1: 0x0000000190223fdc libsystem_kernel.dylib`mach_msg + 72
      frame #2: 0x0000000191221cec CoreFoundation`__CFRunLoopServiceMachPort + 192
      frame #3: 0x000000019121f908 CoreFoundation`__CFRunLoopRun + 1132
      frame #4: 0x000000019114e048 CoreFoundation`CFRunLoopRunSpecific + 444
      frame #5: 0x00000001aa8f1fe8 AVFAudio`GenericRunLoopThread::Entry(void*) + 164
      frame #6: 0x00000001aa917f14 AVFAudio`CAPThread::Entry(CAPThread*) + 84
      frame #7: 0x0000000190307860 libsystem_pthread.dylib`_pthread_body + 240
      frame #8: 0x0000000190307770 libsystem_pthread.dylib`_pthread_start + 284
      frame #9: 0x0000000190304dbc libsystem_pthread.dylib`thread_start + 4
  
    thread #15: tid = 0x9c2cc, 0x000000019022416c libsystem_kernel.dylib`mach_msg_trap + 8, name = 'com.squareup.SocketRocket.NetworkThread'
      frame #0: 0x000000019022416c libsystem_kernel.dylib`mach_msg_trap + 8
      frame #1: 0x0000000190223fdc libsystem_kernel.dylib`mach_msg + 72
      frame #2: 0x0000000191221cec CoreFoundation`__CFRunLoopServiceMachPort + 192
      frame #3: 0x000000019121f908 CoreFoundation`__CFRunLoopRun + 1132
      frame #4: 0x000000019114e048 CoreFoundation`CFRunLoopRunSpecific + 444
      frame #5: 0x0000000191c5cb1c Foundation`-[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 304
      frame #6: 0x00000001003cd7ec cya`-[_FSRRunLoopThread main](self=0x0000000170097c00, _cmd=&lt;unavailable&gt;) + 252 at FSRWebSocket.m:1838
      frame #7: 0x0000000191d5a50c Foundation`__NSThread__start__ + 1024
      frame #8: 0x0000000190307860 libsystem_pthread.dylib`_pthread_body + 240
      frame #9: 0x0000000190307770 libsystem_pthread.dylib`_pthread_start + 284
      frame #10: 0x0000000190304dbc libsystem_pthread.dylib`thread_start + 4
  
    thread #16: tid = 0x9c2d8, 0x0000000190242a88 libsystem_kernel.dylib`__workq_kernreturn + 8
      frame #0: 0x0000000190242a88 libsystem_kernel.dylib`__workq_kernreturn + 8
      frame #1: 0x000000019030536c libsystem_pthread.dylib`_pthread_wqthread + 1452
      frame #2: 0x0000000190304db4 libsystem_pthread.dylib`start_wqthread + 4
  
    thread #18: tid = 0x9c2e8, 0x000000019024223c libsystem_kernel.dylib`__select + 8, name = 'com.apple.CFSocket.private'
      frame #0: 0x000000019024223c libsystem_kernel.dylib`__select + 8
      frame #1: 0x0000000191228b84 CoreFoundation`__CFSocketManager + 640
      frame #2: 0x0000000190307860 libsystem_pthread.dylib`_pthread_body + 240
      frame #3: 0x0000000190307770 libsystem_pthread.dylib`_pthread_start + 284
      frame #4: 0x0000000190304dbc libsystem_pthread.dylib`thread_start + 4
  
    thread #19: tid = 0x9c355, 0x0000000190242a88 libsystem_kernel.dylib`__workq_kernreturn + 8
      frame #0: 0x0000000190242a88 libsystem_kernel.dylib`__workq_kernreturn + 8
      frame #1: 0x0000000190305188 libsystem_pthread.dylib`_pthread_wqthread + 968
      frame #2: 0x0000000190304db4 libsystem_pthread.dylib`start_wqthread + 4
  
    thread #20: tid = 0x9c35f, 0x0000000190242a88 libsystem_kernel.dylib`__workq_kernreturn + 8
      frame #0: 0x0000000190242a88 libsystem_kernel.dylib`__workq_kernreturn + 8
      frame #1: 0x000000019030536c libsystem_pthread.dylib`_pthread_wqthread + 1452
      frame #2: 0x0000000190304db4 libsystem_pthread.dylib`start_wqthread + 4
  
    thread #21: tid = 0x9c360, 0x0000000190242a88 libsystem_kernel.dylib`__workq_kernreturn + 8
      frame #0: 0x0000000190242a88 libsystem_kernel.dylib`__workq_kernreturn + 8
      frame #1: 0x0000000190305188 libsystem_pthread.dylib`_pthread_wqthread + 968
      frame #2: 0x0000000190304db4 libsystem_pthread.dylib`start_wqthread + 4
  (lldb) 
  </code></pre>