这是应用程序崩溃的日志。它在启动时崩溃，我无法弄清楚原因。想法？
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Triggered by Thread: 0
Last Exception Backtrace:
0 CoreFoundation 0x1878eb09c __exceptionPreprocess + 132
1 libobjc.A.dylib 0x193869d78 objc_exception_throw + 60
2 CoreFoundation 0x1878eafdc +[NSException raise:format:] + 128
3 UIKit 0x18ab68c98 -[UINib instantiateWithOwner:options:] + 832
4 UIKit 0x18ab6aba8 -[NSBundle(UINSBundleAdditions) loadNibNamed:owner:options:] + 160
5 UIKit 0x18aa691f8 -[UIApplication _loadMainNibFileNamed:bundle:] + 52
6 UIKit 0x18a82e8a0 -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 516
7 UIKit 0x18a7c1530 -[UIApplication handleEvent:withNewEvent:] + 3336
8 UIKit 0x18a7c0720 -[UIApplication sendEvent:] + 104
9 UIKit 0x18a82e0b0 _UIApplicationHandleEvent + 712
10 GraphicsServices 0x18d211128 _PurpleEventCallback + 676
11 GraphicsServices 0x18d210c54 PurpleEventCallback + 48
12 CoreFoundation 0x1878aafc8 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 56
13 CoreFoundation 0x1878aaf28 __CFRunLoopDoSource1 + 444
14 CoreFoundation 0x1878a914c __CFRunLoopRun + 1620
15 CoreFoundation 0x1877e9b38 CFRunLoopRunSpecific + 452
16 UIKit 0x18a82d2d4 -[UIApplication _run] + 784
17 UIKit 0x18a8280e8 UIApplicationMain + 1156
18 AirHomeVideo 0x100050aec main (main.m:16)
19 libdyld.dylib 0x193e53aa0 start + 4