App crashes on iOS emulator

[ullalaaron]

While tns run ios --emulator , after saving a file ( and therefore refreshing the app ), the app crashes with the following stacktrace:

Class PLBuildVersion is implemented in both /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/System/Library/PrivateFrameworks/AssetsLibraryServices.framework/AssetsLibraryServices (0x1207aacc0) and /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/System/Library/PrivateFrameworks/PhotoLibraryServices.framework/PhotoLibraryServices (0x1205c16f0). One of the two will be used. Which one is undefined.
[Firebase/Analytics][I-ACS023007] Firebase Analytics v.3700000 started
[Firebase/Analytics][I-ACS023008] To enable debug logging set the following application argument: -FIRAnalyticsDebugEnabled (see http://goo.gl/RfcP7r)
*** JavaScript call stack:
	(
		0   configure@[native code]
		1   runInit@file:///app/tns_modules/nativescript-plugin-firebase/firebase.js:427:25
		2   @file:///app/tns_modules/nativescript-plugin-firebase/firebase.js:496:14
		3   initializePromise@:1:11
		4   Promise@[native code]
		5   init@file:///app/tns_modules/nativescript-plugin-firebase/firebase.js:410:21
		6   anonymous@file:///app/app.js:12:14
		7   evaluate@[native code]
		8   moduleEvaluation@:1:11
		9   @:7:50
		10  promiseReactionJob@:1:11
	)
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[__NSPlaceholderArray initWithObjects:count:]: attempt to insert nil object from objects[0]'
	*** First throw call stack:
	(
		0   CoreFoundation                      0x000000010a51eb0b __exceptionPreprocess + 171
		1   libobjc.A.dylib                     0x0000000109f83141 objc_exception_throw + 48
		2   CoreFoundation                      0x000000010a4335cd -[__NSPlaceholderArray initWithObjects:count:] + 269
		3   CoreFoundation                      0x000000010a43a314 +[NSArray arrayWithObjects:count:] + 52
		4   Haloose                             0x000000010549a463 -[RCNConfigDBManager loadMainTableWithBundleIdentifier:fromSource:] + 163
		5   Haloose                             0x000000010549a332 __62-[RCNConfigDBManager loadMainWithBundleIdentifier:fromSource:]_block_invoke + 34
		6   libdispatch.dylib                   0x000000010aa4a792 _dispatch_client_callout + 8
		7   libdispatch.dylib                   0x000000010aa2f3de _dispatch_barrier_sync_f_invoke + 126
		8   libdispatch.dylib                   0x000000010aa33304 _dispatch_barrier_sync_f_slow + 529
		9   Haloose                             0x000000010549a26d -[RCNConfigDBManager loadMainWithBundleIdentifier:fromSource:] + 249
		10  Haloose                             0x0000000105496baa -[RCNConfigContent loadConfigFromMainTable] + 70
		11  Haloose                             0x000000010549511c -[RCNConfigContent initWithDBManager:] + 380
		12  Haloose                             0x0000000105491f24 -[FIRRemoteConfig initWithDBManager:] + 156
		13  Haloose                             0x0000000105491e60 __31+[FIRRemoteConfig remoteConfig]_block_invoke + 86
		14  libdispatch.dylib                   0x000000010aa4a792 _dispatch_client_callout + 8
		15  libdispatch.dylib                   0x000000010aa35a8d dispatch_once_f + 69
		16  Haloose                             0x0000000105491e07 +[FIRRemoteConfig remoteConfig] + 45
		17  Haloose                             0x000000010549168b +[FIRRemoteConfig(FIRApp) receivedReadyToConfigureNotification:] + 127
		18  CoreFoundation                      0x000000010a4bdc2c __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12
		19  CoreFoundation                      0x000000010a4bdb29 _CFXRegistrationPost + 425
		20  CoreFoundation                      0x000000010a4bd892 ___CFXNotificationPost_block_invoke + 50
		21  CoreFoundation                      0x000000010a481162 -[_CFXNotificationRegistrar find:object:observer:enumerator:] + 1826
		22  CoreFoundation                      0x000000010a4802c1 _CFXNotificationPost + 673
		23  Foundation                          0x000000010756fb24 -[NSNotificationCenter postNotificationName:object:userInfo:] + 66
		24  Haloose                             0x00000001053cacc8 +[FIRApp sendNotificationsToSDKs:] + 296
		25  Haloose                             0x00000001053c9ae1 +[FIRApp configureDefaultAppWithOptions:sendingNotifications:] + 341
		26  Haloose                             0x00000001053c97d9 +[FIRApp configure] + 306
		27  NativeScript                        0x00000001072e697d ffi_call_unix64 + 85
		28  ???                                 0x000000012363a650 0x0 + 4888700496

{N} v 2.5.4
plugin v 3.10.10

[EddyVerbruggen]

That's because FIRApp.configure() ran twice in that case (livesync) - which crashes the app. That's a bit of a bug in the Firebase iOS SDK, they should make it reentrant IMO.

In 4.0.0 I moved it to a different spot, but I doubt that will help. Please reopen if it doesn't.