我从firebase crashlytics那里得到了一些随机报告，最近可能经常发生。它说：
Crashed: com.apple.main-thread
0 libobjc.A.dylib 0x18cf26b00 objc_object::release() + 16
1 libobjc.A.dylib 0x18cf2738c (anonymous namespace)::AutoreleasePoolPage::pop(void*) + 676
2 CoreFoundation 0x18dccd828 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 28
3 CoreFoundation 0x18dccd558 __CFRunLoopDoTimer + 864
4 CoreFoundation 0x18dcccd8c __CFRunLoopDoTimers + 248
5 CoreFoundation 0x18dcc7c68 __CFRunLoopRun + 1880
6 CoreFoundation 0x18dcc71f0 CFRunLoopRunSpecific + 436
7 GraphicsServices 0x18ff40584 GSEventRunModal + 100
8 UIKitCore 0x1baed2d40 UIApplicationMain + 212
9 Runner 0x1012a7d50 main (main.m:7)
10 libdyld.dylib 0x18d786bb4 start + 4
com.apple.uikit.eventfetch-thread
0 libsystem_kernel.dylib 0x18d8c7ea4 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x18d8c737c mach_msg + 72
2 CoreFoundation 0x18dcccbe8 __CFRunLoopServiceMachPort + 236
3 CoreFoundation 0x18dcc7a84 __CFRunLoopRun + 1396
4 CoreFoundation 0x18dcc71f0 CFRunLoopRunSpecific + 436
5 Foundation 0x18e6bd494 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 300
6 Foundation 0x18e6bd340 -[NSRunLoop(NSRunLoop) runUntilDate:] + 148
7 UIKitCore 0x1bafc31f4 <redacted> + 136
8 Foundation 0x18e7f023c __NSThread__start__ + 1040
9 libsystem_pthread.dylib 0x18d95825c _pthread_body + 128
10 libsystem_pthread.dylib 0x18d9581bc _pthread_start + 48
11 libsystem_pthread.dylib 0x18d95bcf4 thread_start + 4
io.flutter.1.ui
0 App 0x102259c58 kDartIsolateSnapshotInstructions + 52312
1 App 0x102259a84 kDartIsolateSnapshotInstructions + 51844
2 App 0x102362684 kDartIsolateSnapshotInstructions + 1136260
3 App 0x10243ec8c kDartIsolateSnapshotInstructions + 2038924
4 App 0x102494dc4 kDartIsolateSnapshotInstructions + 2391492
5 App 0x102453168 kDartIsolateSnapshotInstructions + 2122088
6 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
7 App 0x10243e96c kDartIsolateSnapshotInstructions + 2038124
8 App 0x10249a72c kDartIsolateSnapshotInstructions + 2414380
9 App 0x102453168 kDartIsolateSnapshotInstructions + 2122088
10 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
11 App 0x10243e96c kDartIsolateSnapshotInstructions + 2038124
12 App 0x102494dc4 kDartIsolateSnapshotInstructions + 2391492
13 App 0x102453168 kDartIsolateSnapshotInstructions + 2122088
14 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
15 App 0x10243e96c kDartIsolateSnapshotInstructions + 2038124
16 App 0x10249a72c kDartIsolateSnapshotInstructions + 2414380
17 App 0x102453168 kDartIsolateSnapshotInstructions + 2122088
18 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
19 App 0x10243e96c kDartIsolateSnapshotInstructions + 2038124
20 App 0x10249a72c kDartIsolateSnapshotInstructions + 2414380
21 App 0x102453168 kDartIsolateSnapshotInstructions + 2122088
22 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
23 App 0x10243e96c kDartIsolateSnapshotInstructions + 2038124
24 App 0x10249a72c kDartIsolateSnapshotInstructions + 2414380
25 App 0x102453168 kDartIsolateSnapshotInstructions + 2122088
26 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
27 App 0x10243e96c kDartIsolateSnapshotInstructions + 2038124
28 App 0x102494dc4 kDartIsolateSnapshotInstructions + 2391492
29 App 0x102453168 kDartIsolateSnapshotInstructions + 2122088
30 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
31 App 0x10243e96c kDartIsolateSnapshotInstructions + 2038124
32 App 0x10249a72c kDartIsolateSnapshotInstructions + 2414380
33 App 0x102453168 kDartIsolateSnapshotInstructions + 2122088
34 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
35 App 0x10243e96c kDartIsolateSnapshotInstructions + 2038124
36 App 0x10249a72c kDartIsolateSnapshotInstructions + 2414380
37 App 0x102453168 kDartIsolateSnapshotInstructions + 2122088
38 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
39 App 0x10243e96c kDartIsolateSnapshotInstructions + 2038124
40 App 0x10249a72c kDartIsolateSnapshotInstructions + 2414380
41 App 0x102453168 kDartIsolateSnapshotInstructions + 2122088
42 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
43 App 0x10243e96c kDartIsolateSnapshotInstructions + 2038124
44 App 0x10249a72c kDartIsolateSnapshotInstructions + 2414380
45 App 0x102453168 kDartIsolateSnapshotInstructions + 2122088
46 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
47 App 0x10243e96c kDartIsolateSnapshotInstructions + 2038124
48 App 0x102494dc4 kDartIsolateSnapshotInstructions + 2391492
49 App 0x102453168 kDartIsolateSnapshotInstructions + 2122088
50 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
51 App 0x10243e96c kDartIsolateSnapshotInstructions + 2038124
52 App 0x10249a72c kDartIsolateSnapshotInstructions + 2414380
53 App 0x102453168 kDartIsolateSnapshotInstructions + 2122088
54 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
55 App 0x10243e96c kDartIsolateSnapshotInstructions + 2038124
56 App 0x10249a72c kDartIsolateSnapshotInstructions + 2414380
57 App 0x102453168 kDartIsolateSnapshotInstructions + 2122088
58 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
59 App 0x10243e96c kDartIsolateSnapshotInstructions + 2038124
60 App 0x1024b3464 kDartIsolateSnapshotInstructions + 2516068
61 App 0x1024bc108 kDartIsolateSnapshotInstructions + 2552072
62 App 0x102453168 kDartIsolateSnapshotInstructions + 2122088
63 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
64 App 0x10243e96c kDartIsolateSnapshotInstructions + 2038124
65 App 0x10261b8cc kDartIsolateSnapshotInstructions + 3991756
66 App 0x102453168 kDartIsolateSnapshotInstructions + 2122088
67 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
68 App 0x10243e96c kDartIsolateSnapshotInstructions + 2038124
69 App 0x102adea58 kDartIsolateSnapshotInstructions + 8985176
70 App 0x1024bb254 kDartIsolateSnapshotInstructions + 2548308
71 App 0x1024f29a4 kDartIsolateSnapshotInstructions + 2775460
72 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
73 App 0x10243e96c kDartIsolateSnapshotInstructions + 2038124
74 App 0x102a3076c kDartIsolateSnapshotInstructions + 8271724
75 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
76 App 0x10243e96c kDartIsolateSnapshotInstructions + 2038124
77 App 0x10249a72c kDartIsolateSnapshotInstructions + 2414380
78 App 0x102453168 kDartIsolateSnapshotInstructions + 2122088
79 App 0x102a344a8 kDartIsolateSnapshotInstructions + 8287400
80 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
81 App 0x10243e96c kDartIsolateSnapshotInstructions + 2038124
82 App 0x10249a72c kDartIsolateSnapshotInstructions + 2414380
83 App 0x102453168 kDartIsolateSnapshotInstructions + 2122088
84 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
85 App 0x10243e96c kDartIsolateSnapshotInstructions + 2038124
86 App 0x10249a72c kDartIsolateSnapshotInstructions + 2414380
87 App 0x102453168 kDartIsolateSnapshotInstructions + 2122088
88 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
89 App 0x10243e96c kDartIsolateSnapshotInstructions + 2038124
90 App 0x10249a72c kDartIsolateSnapshotInstructions + 2414380
91 App 0x102453168 kDartIsolateSnapshotInstructions + 2122088
92 App 0x10243e0ac kDartIsolateSnapshotInstructions + 2035884
93 App 0x10243dae4 kDartIsolateSnapshotInstructions + 2034404
94 App 0x10243d6c8 kDartIsolateSnapshotInstructions + 2033352
95 App 0x1025f6e80 kDartIsolateSnapshotInstructions + 3841664
96 App 0x1025f6aa8 kDartIsolateSnapshotInstructions + 3840680
97 App 0x1025f69a0 kDartIsolateSnapshotInstructions + 3840416
98 App 0x10246d574 kDartIsolateSnapshotInstructions + 2229620
99 App 0x1023e36d4 kDartIsolateSnapshotInstructions + 1664724
100 App 0x10241d048 kDartIsolateSnapshotInstructions + 1900616
101 App 0x102a83970 kDartIsolateSnapshotInstructions + 8612208
102 App 0x102306298 kDartIsolateSnapshotInstructions + 758424
103 App 0x102ade8b0 kDartIsolateSnapshotInstructions + 8984752
104 App 0x102329cd0 kDartIsolateSnapshotInstructions + 904400
105 App 0x102329bd8 kDartIsolateSnapshotInstructions + 904152
106 App 0x10224b20c kDartVmSnapshotInstructions + 12812
107 Flutter 0x101f761c8 (Missing)
108 Flutter 0x10205cd7c (Missing)
109 Flutter 0x101e3ec80 (Missing)
110 Flutter 0x101bb6744 (Missing)
111 Flutter 0x101bc71b4 (Missing)
112 Flutter 0x101bc3f38 (Missing)
113 Flutter 0x101b83364 (Missing)
114 Flutter 0x101bd7b64 (Missing)
115 Flutter 0x101b90b34 (Missing)
116 Flutter 0x101b91ffc (Missing)
117 CoreFoundation 0x18dccd828 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 28
118 CoreFoundation 0x18dccd558 __CFRunLoopDoTimer + 864
119 CoreFoundation 0x18dcccd8c __CFRunLoopDoTimers + 248
120 CoreFoundation 0x18dcc7c68 __CFRunLoopRun + 1880
121 CoreFoundation 0x18dcc71f0 CFRunLoopRunSpecific + 436
122 Flutter 0x101b91e88 (Missing)
123 Flutter 0x101b9169c (Missing)
124 libsystem_pthread.dylib 0x18d95825c _pthread_body + 128
125 libsystem_pthread.dylib 0x18d9581bc _pthread_start + 48
126 libsystem_pthread.dylib 0x18d95bcf4 thread_start + 4
io.flutter.1.gpu
0 libsystem_kernel.dylib 0x18d8c7ea4 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x18d8c737c mach_msg + 72
2 CoreFoundation 0x18dcccbe8 __CFRunLoopServiceMachPort + 236
3 CoreFoundation 0x18dcc7a84 __CFRunLoopRun + 1396
4 CoreFoundation 0x18dcc71f0 CFRunLoopRunSpecific + 436
5 Flutter 0x101b91e88 (Missing)
6 Flutter 0x101b9169c (Missing)
7 libsystem_pthread.dylib 0x18d95825c _pthread_body + 128
8 libsystem_pthread.dylib 0x18d9581bc _pthread_start + 48
9 libsystem_pthread.dylib 0x18d95bcf4 thread_start + 4
io.flutter.1.io
0 libsystem_kernel.dylib 0x18d8c7ea4 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x18d8c737c mach_msg + 72
2 CoreFoundation 0x18dcccbe8 __CFRunLoopServiceMachPort + 236
3 CoreFoundation 0x18dcc7a84 __CFRunLoopRun + 1396
4 CoreFoundation 0x18dcc71f0 CFRunLoopRunSpecific + 436
5 Flutter 0x101b91e88 (Missing)
6 Flutter 0x101b9169c (Missing)
7 libsystem_pthread.dylib 0x18d95825c _pthread_body + 128
8 libsystem_pthread.dylib 0x18d9581bc _pthread_start + 48
9 libsystem_pthread.dylib 0x18d95bcf4 thread_start + 4
Thread
0 libsystem_kernel.dylib 0x18d8d491c kevent + 8
1 Flutter 0x101e41454 (Missing)
2 Flutter 0x101e741a4 (Missing)
3 libsystem_pthread.dylib 0x18d95825c _pthread_body + 128
4 libsystem_pthread.dylib 0x18d9581bc _pthread_start + 48
5 libsystem_pthread.dylib 0x18d95bcf4 thread_start + 4
Thread
0 libsystem_kernel.dylib 0x18d8d3b9c __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x18d959100 _pthread_wqthread + 348
2 libsystem_pthread.dylib 0x18d95bcec start_wqthread + 4
com.twitter.crashlytics.ios.MachExceptionServer
0 Runner 0x1013933b0 CLSProcessRecordAllThreads + 4311184304
1 Runner 0x101393870 CLSProcessRecordAllThreads + 4311185520
2 Runner 0x1013830c0 CLSHandler + 4311118016
3 Runner 0x10137e4b0 CLSMachExceptionServer + 4311098544
4 libsystem_pthread.dylib 0x18d95825c _pthread_body + 128
5 libsystem_pthread.dylib 0x18d9581bc _pthread_start + 48
6 libsystem_pthread.dylib 0x18d95bcf4 thread_start + 4
JavaScriptCore bmalloc scavenger
0 libsystem_kernel.dylib 0x18d8d2f0c __psynch_cvwait + 8
1 libsystem_pthread.dylib 0x18d950c88 _pthread_cond_wait$VARIANT$mp + 636
2 libc++.1.dylib 0x18cea04d0 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 24
3 JavaScriptCore 0x19507e9c8 void std::__1::condition_variable_any::wait<std::__1::unique_lock<bmalloc::Mutex> >(std::__1::unique_lock<bmalloc::Mutex>&) + 104
4 JavaScriptCore 0x195082abc bmalloc::Scavenger::threadRunLoop() + 176
5 JavaScriptCore 0x1950821f0 bmalloc::Scavenger::Scavenger(std::__1::lock_guard<bmalloc::Mutex>&) + 10
6 JavaScriptCore 0x195083c9c std::__1::__thread_specific_ptr<std::__1::__thread_struct>::set_pointer(std::__1::__thread_struct*) + 38
7 libsystem_pthread.dylib 0x18d95825c _pthread_body + 128
8 libsystem_pthread.dylib 0x18d9581bc _pthread_start + 48
9 libsystem_pthread.dylib 0x18d95bcf4 thread_start + 4
Thread
0 libsystem_pthread.dylib 0x18d95bce8 start_wqthread + 190
com.google.fira.worker
0 libsystem_kernel.dylib 0x18d8d4430 fsync + 8
1 libsqlite3.dylib 0x18e1a6da8 sqlite3_free_table + 67320
2 libsqlite3.dylib 0x18e1b18b0 sqlite3_randomness + 2476
3 libsqlite3.dylib 0x18e1a66c8 sqlite3_free_table + 65560
4 libsqlite3.dylib 0x18e190cac sqlite3_value_text + 23712
5 libsqlite3.dylib 0x18e15c290 sqlite3_finalize + 3672
6 libsqlite3.dylib 0x18e188f00 sqlite3_step + 64964
7 libsqlite3.dylib 0x18e1792ec sqlite3_step + 432
8 libsqlite3.dylib 0x18e141b88 sqlite3_exec + 336
9 Runner 0x1014b5c74 -[APMSqliteStore endTransaction] + 4312374388
10 Runner 0x1014b5934 -[APMSqliteStore performTransaction:] + 4312373556
11 Runner 0x10148f4b0 -[APMMeasurement writeEventOnWorkerQueue:] + 4312216752
12 Runner 0x10148edb4 -[APMMeasurement handleEventOnWorkerQueue:] + 4312214964
13 Runner 0x1014a2150 __51-[APMScheduler scheduleOnWorkerQueueBlockID:block:]_block_invoke + 4312293712
14 libdispatch.dylib 0x18d7756c8 _dispatch_call_block_and_release + 24
15 libdispatch.dylib 0x18d776484 _dispatch_client_callout + 16
16 libdispatch.dylib 0x18d71dbd0 _dispatch_lane_serial_drain$VARIANT$mp + 592
17 libdispatch.dylib 0x18d71e718 _dispatch_lane_invoke$VARIANT$mp + 432
18 libdispatch.dylib 0x18d726eb8 _dispatch_workloop_worker_thread + 600
19 libsystem_pthread.dylib 0x18d9590dc _pthread_wqthread + 312
20 libsystem_pthread.dylib 0x18d95bcec start_wqthread + 4
com.apple.NSURLConnectionLoader
0 libsystem_kernel.dylib 0x18d8c7ea4 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x18d8c737c mach_msg + 72
2 CoreFoundation 0x18dcccbe8 __CFRunLoopServiceMachPort + 236
3 CoreFoundation 0x18dcc7a84 __CFRunLoopRun + 1396
4 CoreFoundation 0x18dcc71f0 CFRunLoopRunSpecific + 436
5 CFNetwork 0x18e2ea00c -[__CoreSchedulingSetRunnable runForever] + 212
6 Foundation 0x18e7f023c __NSThread__start__ + 1040
7 libsystem_pthread.dylib 0x18d95825c _pthread_body + 128
8 libsystem_pthread.dylib 0x18d9581bc _pthread_start + 48
9 libsystem_pthread.dylib 0x18d95bcf4 thread_start + 4
WebThread
0 libsystem_kernel.dylib 0x18d8c7ea4 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x18d8c737c mach_msg + 72
2 CoreFoundation 0x18dcccbe8 __CFRunLoopServiceMachPort + 236
3 CoreFoundation 0x18dcc7a84 __CFRunLoopRun + 1396
4 CoreFoundation 0x18dcc71f0 CFRunLoopRunSpecific + 436
5 WebCore 0x196b36eec RunWebThread(void*) + 592
6 libsystem_pthread.dylib 0x18d95825c _pthread_body + 128
7 libsystem_pthread.dylib 0x18d9581bc _pthread_start + 48
8 libsystem_pthread.dylib 0x18d95bcf4 thread_start + 4
AVAudioSession Notify Thread
0 libsystem_kernel.dylib 0x18d8c7ea4 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x18d8c737c mach_msg + 72
2 CoreFoundation 0x18dcccbe8 __CFRunLoopServiceMachPort + 236
3 CoreFoundation 0x18dcc7a84 __CFRunLoopRun + 1396
4 CoreFoundation 0x18dcc71f0 CFRunLoopRunSpecific + 436
5 AVFAudio 0x193cda60c GenericRunLoopThread::Entry(void*) + 164
6 AVFAudio 0x193d06768 CAPThread::Entry(CAPThread*) + 88
7 libsystem_pthread.dylib 0x18d95825c _pthread_body + 128
8 libsystem_pthread.dylib 0x18d9581bc _pthread_start + 48
9 libsystem_pthread.dylib 0x18d95bcf4 thread_start + 4
com.apple.root.default-qos
0 libsystem_kernel.dylib 0x18d8d3a68 __unlink + 8
1 libsystem_kernel.dylib 0x18d8cfa0c unlink + 16
2 libremovefile.dylib 0x18d7b963c __removefile_tree_walker + 496
3 libremovefile.dylib 0x18d7b9a74 removefile + 140
4 Foundation 0x18e713c70 -[NSFilesystemItemRemoveOperation main] + 168
5 Foundation 0x18e6d3f8c -[__NSOperationInternal _start:] + 740
6 Foundation 0x18e713af0 -[NSFileManager removeItemAtPath:error:] + 84
7 Runner 0x1013ab838 __53-[ANSAnswersController operationsForUncompressedLog:]_block_invoke + 4311283768
8 Foundation 0x18e7cb93c __103+[__NSOperationInternal _observeValueForKeyPath:ofObject:changeKind:oldValue:newValue:indexes:context:]_block_invoke.129 + 28
9 libdispatch.dylib 0x18d7756c8 _dispatch_call_block_and_release + 24
10 libdispatch.dylib 0x18d776484 _dispatch_client_callout + 16
11 libdispatch.dylib 0x18d719490 _dispatch_queue_override_invoke + 680
12 libdispatch.dylib 0x18d725a18 _dispatch_root_queue_drain + 376
13 libdispatch.dylib 0x18d7262c0 _dispatch_worker_thread2 + 128
14 libsystem_pthread.dylib 0x18d95917c _pthread_wqthread + 472
15 libsystem_pthread.dylib 0x18d95bcec start_wqthread + 4
Thread
0 libsystem_pthread.dylib 0x18d95bce8 start_wqthread + 190
Thread
0 libsystem_pthread.dylib 0x18d95bce8 start_wqthread + 190
所以我检查我的项目并在
中找到main.mRunner> Runner>支持文件> main.m
根据错误报告第9行显示其内容。 m第7行。在main.m第7行中：
return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
我不知道那是什么意思。任何人都可以解释它如何成为错误。以及该错误的解决方案。谢谢