我在启动应用程序时遇到了几次崩溃，自Xcode上次安装以来，没有进行任何代码更改。当我打开设备日志时，Xcode并不完全表示崩溃，尤其是崩溃的地方。为什么会这样，如何获得完全符号化的崩溃日志？不幸的是，崩溃无法在直接调试会话中重现。
Date/Time: 2018-12-01 12:30:38.3874 +0400
Launch Time: 2018-12-01 12:30:36.0854 +0400
OS Version: iPhone OS 12.1 (16B92)
Baseband Version: 2.01.07
Report Version: 104
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000001, 0x0000000101abe1a4
Termination Signal: Trace/BPT trap: 5
Termination Reason: Namespace SIGNAL, Code 0x5
Terminating Process: exc handler [43684]
Triggered by Thread: 0
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libswiftCore.dylib 0x0000000101abe1a4 0x1018cc000 + 2040228
1 libswiftCore.dylib 0x0000000101abe1a4 0x1018cc000 + 2040228
2 libswiftCore.dylib 0x0000000101925db8 0x1018cc000 + 368056
3 MyApp-Swift 0x0000000100e69880 0x100d64000 + 1071232
4 MyApp-Swift 0x0000000100dfbd00 0x100d64000 + 621824
5 MyApp-Swift 0x0000000100dfbdb8 0x100d64000 + 622008
6 UIKitCore 0x00000001c29da768 -[UIApplication sendAction:to:from:forEvent:] + 96
7 UIKitCore 0x00000001c24686d0 -[UIControl sendAction:to:forEvent:] + 80
8 UIKitCore 0x00000001c24689f0 -[UIControl _sendActionsForEvents:withEvent:] + 440
9 UIKitCore 0x00000001c24679f0 -[UIControl touchesEnded:withEvent:] + 568
10 UIKitCore 0x00000001c2a1418c -[UIWindow _sendTouchesForEvent:] + 2472
11 UIKitCore 0x00000001c2a153f0 -[UIWindow sendEvent:] + 3156
12 UIKitCore 0x00000001c29f46ec -[UIApplication sendEvent:] + 340
13 UIKitCore 0x00000001c2ac057c __dispatchPreprocessedEventFromEventQueue + 1620
14 UIKitCore 0x00000001c2ac2f74 __handleEventQueueInternal + 4740
15 UIKitCore 0x00000001c2abba64 __handleHIDEventFetcherDrain + 152
16 CoreFoundation 0x00000001958ac1cc __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 24
17 CoreFoundation 0x00000001958ac14c __CFRunLoopDoSource0 + 88
18 CoreFoundation 0x00000001958aba30 __CFRunLoopDoSources0 + 176
19 CoreFoundation 0x00000001958a68fc __CFRunLoopRun + 1040
20 CoreFoundation 0x00000001958a61cc CFRunLoopRunSpecific + 436
21 GraphicsServices 0x0000000197b1d584 GSEventRunModal + 100
22 UIKitCore 0x00000001c29d9054 UIApplicationMain + 212
23 MyApp-Swift 0x0000000100f48dec 0x100d64000 + 1986028
24 libdyld.dylib 0x0000000195366bb4 start + 4