title: Getting error message when run react-native application on Xcode 10.0
body: <p>I am new for IOS application development I am trying to run react native application on MAC (Virtual box) but stuck after launch screen.</p>
  
  <p>Getting error at this line of code.
  <a href="https://i.stack.imgur.com/Mm8TW.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Mm8TW.jpg" alt="enter image description here"></a></p>
  
  <p>showing below message on report navigator.</p>
  
  <p>2018-09-26 05:03:23.637243+0530 Leaderboard[56620:700325]  - [I-ACS036002] Analytics screen reporting is enabled. Call +[FIRAnalytics setScreenName:setScreenClass:] to set the screen name or override the default screen class name. To disable screen reporting, set the flag FirebaseScreenReportingEnabled to NO (boolean) in the Info.plist
  2018-09-26 05:03:24.334073+0530 Leaderboard[56620:699937] +[CATransaction synchronize] called within transaction
  2018-09-26 05:03:25.352 [info][tid:main][RCTCxxBridge.mm:216] Initializing  (parent: , executor: (null))
  2018-09-26 05:03:25.385767+0530 Leaderboard[56620:699937] Initializing  (parent: , executor: (null))
  2018-09-26 05:03:25.749 [info][tid:main][RCTRootView.m:293] Running application Leaderboard ({
      initialProps =     {
      };
      rootTag = 1;
  })
  2018-09-26 05:03:25.831679+0530 Leaderboard[56620:699937] Running application Leaderboard ({
      initialProps =     {
      };
      rootTag = 1;
  })
  2018-09-26 05:03:26.353502+0530 Leaderboard[56620:699937] <strong>* Terminating app due to uncaught exception 'com.firebase.core', reason: '<code>[FIRApp configure];</code> (<code>FirebaseApp.configure()</code> in Swift) could not find a valid GoogleService-Info.plist in your project. Please download one from <a href="https://console.firebase.google.com/" rel="nofollow noreferrer">https://console.firebase.google.com/</a>.'
  *</strong> First throw call stack:
  (
      0   CoreFoundation                      0x00000001052a91e6 <strong>exceptionPreprocess + 294
      1   libobjc.A.dylib                     0x000000010371e031 objc_exception_throw + 48
      2   CoreFoundation                      0x000000010531e975 +[NSException raise:format:] + 197
      3   Leaderboard                         0x0000000101e80451 +[FIRApp configure] + 481
      4   Leaderboard                         0x0000000101e7fb07 -[AppDelegate application:didFinishLaunchingWithOptions:] + 871
      5   UIKit                               0x0000000107ee96fb -[UIApplication _handleDelegateCallbacksWithOptions:isSuspended:restoreState:] + 278
      6   UIKit                               0x0000000107eeb172 -[UIApplication _callInitializationDelegatesForMainScene:transitionContext:] + 4123
      7   UIKit                               0x0000000107ef05cb -[UIApplication _runWithMainScene:transitionContext:completion:] + 1677
      8   UIKit                               0x00000001082b2f7e __111-[__UICanvasLifecycleMonitor_Compatability _scheduleFirstCommitForScene:transition:firstActivation:completion:]_block_invoke + 866
      9   UIKit                               0x0000000108685a39 +[_UICanvas _enqueuePostSettingUpdateTransactionBlock:] + 153
      10  UIKit                               0x00000001082b2bba -[__UICanvasLifecycleMonitor_Compatability _scheduleFirstCommitForScene:transition:firstActivation:completion:] + 236
      11  UIKit                               0x00000001082b33db -[__UICanvasLifecycleMonitor_Compatability activateEventsOnly:withContext:completion:] + 675
      12  UIKit                               0x0000000108c24614 __82-[_UIApplicationCanvas _transitionLifecycleStateWithTransitionContext:completion:]_block_invoke + 299
      13  UIKit                               0x0000000108c244ae -[_UIApplicationCanvas _transitionLifecycleStateWithTransitionContext:completion:] + 433
      14  UIKit                               0x000000010890875d __125-[_UICanvasLifecycleSettingsDiffAction performActionsForCanvas:withUpdatedScene:settingsDiff:fromSettings:transitionContext:]_block_invoke + 221
      15  UIKit                               0x0000000108b034b7 _performActionsWithDelayForTransitionContext + 100
      16  UIKit                               0x0000000108908627 -[_UICanvasLifecycleSettingsDiffAction performActionsForCanvas:withUpdatedScene:settingsDiff:fromSettings:transitionContext:] + 223
      17  UIKit                               0x00000001086850e0 -[_UICanvas scene:didUpdateWithDiff:transitionContext:completion:] + 392
      18  UIKit                               0x0000000107eeeeac -[UIApplication workspace:didCreateScene:withTransitionContext:completion:] + 515
      19  UIKit                               0x00000001084c1bcb -[UIApplicationSceneClientAgent scene:didInitializeWithEvent:completion:] + 361
      20  FrontBoardServices                  0x000000010e05a2f3 -[FBSSceneImpl _didCreateWithTransitionContext:completion:] + 331
      21  FrontBoardServices                  0x000000010e062cfa __56-[FBSWorkspace client:handleCreateScene:withCompletion:]_block_invoke_2 + 225
      22  libdispatch.dylib                   0x000000010695a7ec _dispatch_client_callout + 8
      23  libdispatch.dylib                   0x000000010695fdb8 _dispatch_block_invoke_direct + 592
      24  FrontBoardServices                  0x000000010e08e470 __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK</strong> + 24
      25  FrontBoardServices                  0x000000010e08e12e -[FBSSerialQueue _performNext] + 439
      26  FrontBoardServices                  0x000000010e08e68e -[FBSSerialQueue _performNextFromRunLoopSource] + 45
      27  CoreFoundation                      0x000000010524bbb1 <strong>CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION</strong> + 17
      28  CoreFoundation                      0x00000001052304af __CFRunLoopDoSources0 + 271
      29  CoreFoundation                      0x000000010522fa6f __CFRunLoopRun + 1263
      30  CoreFoundation                      0x000000010522f30b CFRunLoopRunSpecific + 635
      31  GraphicsServices                    0x000000010d42ea73 GSEventRunModal + 62
      32  UIKit                               0x0000000107ef2057 UIApplicationMain + 159
      33  Leaderboard                         0x0000000101e7fc90 main + 112
      34  libdyld.dylib                       0x000000010a98c955 start + 1
      35  ???                                 0x0000000000000001 0x0 + 1
  )
  libc++abi.dylib: terminating with uncaught exception of type NSException
  (lldb) </p>