所以我使用 linphone SDK 构建了一个 Voip 应用程序。它构建得很好，在模拟器和真实设备上运行良好，但是当我使用我的 SIP 帐户登录时，关闭应用程序并再次打开它，应用程序在 Launchscreen 上崩溃并冻结。
这是我得到的错误：
2016-10-11 14:50:40.093 linphone[25577:75140] Crash: *** -[__NSPlaceholderArray initWithObjects:count:]: attempt to insert nil object from objects[1]
2016-10-11 14:50:40.094 linphone[25577:75140] Stack Trace: (
0 CoreFoundation 0x0000000110d1934b __exceptionPreprocess + 171
1 libobjc.A.dylib 0x000000011077a21e objc_exception_throw + 48
2 CoreFoundation 0x0000000110c293b3 -[__NSPlaceholderArray initWithObjects:count:] + 275
3 CoreFoundation 0x0000000110c305c4 +[NSArray arrayWithObjects:count:] + 52
4 linphone 0x000000010aa6c3de -[InAppProductsManager callXmlrpcRequestWithParams:onSuccess:onError:extra:] + 542
5 linphone 0x000000010aa6be2e -[InAppProductsManager checkAccountExpirationDate] + 158
6 linphone 0x000000010aa67a37 -[InAppProductsManager init] + 599
7 linphone 0x000000010aa26fd7 -[LinphoneManager startLinphoneCore] + 199
8 linphone 0x000000010a9c4693 -[LinphoneAppDelegate application:didFinishLaunchingWithOptions:] + 563
9 UIKit 0x000000010ec8168e -[UIApplication _handleDelegateCallbacksWithOptions:isSuspended:restoreState:] + 290
10 UIKit 0x000000010ec83013 -[UIApplication _callInitializationDelegatesForMainScene:transitionContext:] + 4236
11 UIKit 0x000000010ec893b9 -[UIApplication _runWithMainScene:transitionContext:completion:] + 1731
12 UIKit 0x000000010ec86539 -[UIApplication workspaceDidEndTransaction:] + 188
13 FrontBoardServices 0x000000011565476b __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__ + 24
14 FrontBoardServices 0x00000001156545e4 -[FBSSerialQueue _performNext] + 189
15 FrontBoardServices 0x000000011565496d -[FBSSerialQueue _performNextFromRunLoopSource] + 45
16 CoreFoundation 0x0000000110cbe311 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
17 CoreFoundation 0x0000000110ca359c __CFRunLoopDoSources0 + 556
18 CoreFoundation 0x0000000110ca2a86 __CFRunLoopRun + 918
19 CoreFoundation 0x0000000110ca2494 CFRunLoopRunSpecific + 420
20 UIKit 0x000000010ec84db6 -[UIApplication _run] + 434
21 UIKit 0x000000010ec8af34 UIApplicationMain + 159
22 linphone 0x000000010a9c2ebe main + 126
23 libdyld.dylib 0x000000011167b68d start + 1
24 ??? 0x0000000000000007 0x0 + 7
)
2016-10-11 14:50:40.113 linphone[25577:75140] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[__NSPlaceholderArray initWithObjects:count:]: attempt to insert nil object from objects[1]'
*** First throw call stack:
(
0 CoreFoundation 0x0000000110d1934b __exceptionPreprocess + 171
1 libobjc.A.dylib 0x000000011077a21e objc_exception_throw + 48
2 CoreFoundation 0x0000000110c293b3 -[__NSPlaceholderArray initWithObjects:count:] + 275
3 CoreFoundation 0x0000000110c305c4 +[NSArray arrayWithObjects:count:] + 52
4 linphone 0x000000010aa6c3de -[InAppProductsManager callXmlrpcRequestWithParams:onSuccess:onError:extra:] + 542
5 linphone 0x000000010aa6be2e -[InAppProductsManager checkAccountExpirationDate] + 158
6 linphone 0x000000010aa67a37 -[InAppProductsManager init] + 599
7 linphone 0x000000010aa26fd7 -[LinphoneManager startLinphoneCore] + 199
8 linphone 0x000000010a9c4693 -[LinphoneAppDelegate application:didFinishLaunchingWithOptions:] + 563
9 UIKit 0x000000010ec8168e -[UIApplication _handleDelegateCallbacksWithOptions:isSuspended:restoreState:] + 290
10 UIKit 0x000000010ec83013 -[UIApplication _callInitializationDelegatesForMainScene:transitionContext:] + 4236
11 UIKit 0x000000010ec893b9 -[UIApplication _runWithMainScene:transitionContext:completion:] + 1731
12 UIKit 0x000000010ec86539 -[UIApplication workspaceDidEndTransaction:] + 188
13 FrontBoardServices 0x000000011565476b __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__ + 24
14 FrontBoardServices 0x00000001156545e4 -[FBSSerialQueue _performNext] + 189
15 FrontBoardServices 0x000000011565496d -[FBSSerialQueue _performNextFromRunLoopSource] + 45
16 CoreFoundation 0x0000000110cbe311 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
17 CoreFoundation 0x0000000110ca359c __CFRunLoopDoSources0 + 556
18 CoreFoundation 0x0000000110ca2a86 __CFRunLoopRun + 918
19 CoreFoundation 0x0000000110ca2494 CFRunLoopRunSpecific + 420
20 UIKit 0x000000010ec84db6 -[UIApplication _run] + 434
21 UIKit 0x000000010ec8af34 UIApplicationMain + 159
22 linphone 0x000000010a9c2ebe main + 126
23 libdyld.dylib 0x000000011167b68d start + 1
24 ??? 0x0000000000000007 0x0 + 7
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)
关于错误是什么的任何想法？谢谢大家！！