Can someone help me to solve this problem！ I can't find the solution, a long time, this random crash
crash log
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000018
Termination Signal: Segmentation fault: 11,
Termination Reason: Namespace SIGNAL, Code 0xb Terminating Process: exc handler [0] Triggered by Thread: 0
Filtered syslog: None found
Thread 0 name: Dispatch queue: com.apple.main-thread Thread 0 Crashed: 0 libsystem_blocks.dylib 0x0000000188c5ea1c _Block_release + 132
1 Foundation 0x000000018a98b10c -[NSBlockObservationSink dealloc] + 48
2 Foundation 0x000000018a98b10c -[NSBlockObservationSink dealloc] + 48
3 Foundation 0x000000018a98acb4 -[_NSConcreteObservation dealloc] + 60
4 Foundation 0x000000018a83a338 empty + 72
5 Foundation 0x000000018a7873b0 -[NSConcreteMapTable removeAllItems] + 84
6 UIKit 0x000000019051281c -[UIView(AdditionalLayoutSupport) _clearLayoutVariableObservationsOnlyToSupportTAMICChange:] + 68
7 UIKit 0x000000018fcc0f3c __57-[UIView(AdditionalLayoutSupport) _switchToLayoutEngine:]_block_invoke + 408
8 Foundation 0x000000018a7ac510 -[NSISEngine withBehaviors:performModifications:] + 168
9 UIKit 0x000000018fbbd7cc -[UIView(AdditionalLayoutSupport) _switchToLayoutEngine:] + 224
10 UIKit 0x000000018fcc1104 __57-[UIView(AdditionalLayoutSupport) _switchToLayoutEngine:]_block_invoke_2 + 196
11 UIKit 0x000000018fcc0fd8 __57-[UIView(AdditionalLayoutSupport) _switchToLayoutEngine:]_block_invoke + 564
12 Foundation 0x000000018a7ac510 -[NSISEngine withBehaviors:performModifications:] + 168
13 UIKit 0x000000018fbbd7cc -[UIView(AdditionalLayoutSupport) _switchToLayoutEngine:] + 224
14 UIKit 0x000000018fbbcf58 __45-[UIView(Hierarchy) _postMovedFromSuperview:]_block_invoke + 120
15 Foundation 0x000000018a7ac510 -[NSISEngine withBehaviors:performModifications:] + 168
16 UIKit 0x000000018fbbcdf0 -[UIView(Hierarchy) _postMovedFromSuperview:] + 820
17 UIKit 0x000000018feba268 __UIViewWasRemovedFromSuperview + 172
18 UIKit 0x000000018fbbbe6c -[UIView(Hierarchy) removeFromSuperview] + 512
19 meiliyue 0x00000001007f64a8 0x1000f8000 + 7333032
20 UIKit 0x000000018fbfa214 -[UIViewAnimationBlockDelegate _didEndBlockAnimation:finished:context:] + 492
21 UIKit 0x000000018fbf9d38 -[UIViewAnimationState sendDelegateAnimationDidStop:finished:] + 312
22 UIKit 0x000000018fbf9b78 -[UIViewAnimationState animationDidStop:finished:] + 160
23 QuartzCore 0x000000018d083404 CA::Layer::run_animation_callbacks(void*) + 260
24 libdispatch.dylib 0x0000000188c091c0 _dispatch_client_callout + 16
25 libdispatch.dylib 0x0000000188c0dd6c _dispatch_main_queue_callback_4CF + 1000
26 CoreFoundation 0x0000000189d2df2c CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE + 12
27 CoreFoundation 0x0000000189d2bb18 __CFRunLoopRun + 1660
28 CoreFoundation 0x0000000189c5a048 CFRunLoopRunSpecific + 444
29 GraphicsServices 0x000000018b6dd198 GSEventRunModal + 180
30 UIKit 0x000000018fc2c818 -[UIApplication _run] + 684
31 UIKit 0x000000018fc27550 UIApplicationMain + 208
32 meiliyue 0x000000010010af78 0x1000f8000 + 77688
33 libdyld.dylib 0x0000000188c3c5b8 start + 4
