title: iOS 13 crash when receiving push notification?
body: <p>We are experiencing a lot of the following crashes on iOS 13:</p>
  
  <pre><code>Crashed: com.twitter.crashlytics.ios.exception
  0  MyApp                         0x1029626ac CLSProcessRecordAllThreads + 376 (CLSProcess.c:376)
  1  MyApp                         0x102962a94 CLSProcessRecordAllThreads + 407 (CLSProcess.c:407)
  2  MyApp                         0x102952798 CLSHandler + 26 (CLSHandler.m:26)
  3  MyApp                         0x102960cc0 __CLSExceptionRecord_block_invoke + 199 (CLSException.mm:199)
  4  libdispatch.dylib              0x1994911cc _dispatch_client_callout + 16
  5  libdispatch.dylib              0x199443d04 _dispatch_lane_barrier_sync_invoke_and_complete + 56
  6  MyApp                         0x102960768 CLSExceptionRecord + 206 (CLSException.mm:206)
  7  MyApp                         0x10296059c CLSExceptionRecordNSException + 102 (CLSException.mm:102)
  8  MyApp                         0x1029601c0 CLSTerminateHandler() + 259 (CLSException.mm:259)
  9  libc++abi.dylib                0x199591304 std::__terminate(void (*)()) + 16
  10 libc++abi.dylib                0x19959129c std::terminate() + 44
  11 libobjc.A.dylib                0x1994ec2dc _objc_terminate() + 10
  12 libdispatch.dylib              0x1994911e0 _dispatch_client_callout + 36
  13 libdispatch.dylib              0x199443d04 _dispatch_lane_barrier_sync_invoke_and_complete + 56
  14 BaseBoard                      0x19c307ccc -[BSAction sendResponse:withCompletion:] + 116
  15 UIKitCore                      0x19d341558 -[UIHandleRemoteNotificationAction sendResponse:] + 128
  16 UIKitCore                      0x19d7bb250 __91-[UIApplication _handleNonLaunchSpecificActions:forScene:withTransitionContext:completion:]_block_invoke_3.2661 + 72
  17 UIKitCore                      0x19d7af014 _runAfterCACommitDeferredBlocks + 316
  18 UIKitCore                      0x19d79f064 _cleanUpAfterCAFlushAndRunDeferredBlocks + 232
  19 UIKitCore                      0x19d7ce80c _afterCACommitHandler + 76
  20 CoreFoundation                 0x1997404f8 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 32
  21 CoreFoundation                 0x19973b3e4 __CFRunLoopDoObservers + 416
  22 CoreFoundation                 0x19973b9b0 __CFRunLoopRun + 1308
  23 CoreFoundation                 0x19973b16c CFRunLoopRunSpecific + 464
  24 GraphicsServices               0x1a3573328 GSEventRunModal + 104
  25 UIKitCore                      0x19d7a5d0c UIApplicationMain + 1936
  26 MyApp                         0x1021fa41c main + 22 (main.m:22)
  27 libdyld.dylib                  0x1995c6424 start + 4
  </code></pre>
  
  <p>With the following message: </p>
  
  <p><code>Fatal Exception: NSInternalInconsistencyException
  this request has been neutered - you can't call -sendResponse: twice nor after encoding it
  +[_CFXNotificationTokenRegistration keyCallbacks]</code></p>
  
  <p>Has anyone an idea what is causing this crash? The following line<code>15 UIKitCore                      0x19d341558 -[UIHandleRemoteNotificationAction sendResponse:] + 128</code> indicates that this is happening when receiving a remote notification I guess, not sure though. Can this relate to not calling the <code>fetchCompletionHandler</code>callback properly when receiving a remote notification? Thankful for any suggestions, thx :)</p>