App crashes on launch #117
Description
This seems to happen mainly on iPhone when launching to a new local post, but I've also seen this happen when tapping the reload-from-server button; the app crashes with the following stack trace:
2020-11-02 15:09:44.233200-0500 WriteFreely-MultiPlatform[53569:8780093] [] nw_protocol_get_quic_image_block_invoke dlopen libquic failed
2020-11-02 15:09:46.202943-0500 WriteFreely-MultiPlatform[53569:8779747] *** Terminating app due to uncaught exception 'NSGenericException', reason: '*** Collection <__NSCFSet: 0x600002830cf0> was mutated while being enumerated.'
*** First throw call stack:
(
0 CoreFoundation 0x00007fff2043a126 __exceptionPreprocess + 242
1 libobjc.A.dylib 0x00007fff20177f78 objc_exception_throw + 48
2 CoreFoundation 0x00007fff2043968d +[__NSFastEnumerationEnumerator allocWithZone:] + 0
3 CoreData 0x00007fff250e8ef8 -[NSManagedObjectContext executeFetchRequest:error:] + 2219
4 CoreData 0x00007fff252a8939 __43-[NSFetchedResultsController performFetch:]_block_invoke + 417
5 CoreData 0x00007fff2511d933 developerSubmittedBlockToNSManagedObjectContextPerform + 154
6 CoreData 0x00007fff2511d81a -[NSManagedObjectContext performBlockAndWait:] + 197
7 CoreData 0x00007fff252aadcc -[NSFetchedResultsController _recursivePerformBlockAndWait:withContext:] + 145
8 CoreData 0x00007fff252a868c -[NSFetchedResultsController performFetch:] + 231
9 SwiftUI 0x00007fff563da9de $s7SwiftUI12FetchRequestV6updateyyF + 1790
10 SwiftUI 0x00007fff560da4e8 $s7SwiftUI26EmbeddedDynamicPropertyBox33_49D2A32E637CD497C6DE29B8E060A506LLV6update8property5phaseSbxz_AA12_GraphInputsV5PhaseVtF + 24
11 SwiftUI 0x00007fff5641bd6c $s7SwiftUI9BoxVTable33_68550FF604D39F05971FE35A26EE75B0LLC6update3ptr8property5phaseSbSv_SvAA12_GraphInputsV5PhaseVtFZ + 204
12 SwiftUI 0x00007fff5641b49e $s7SwiftUI22_DynamicPropertyBufferV6update9container5phaseSbSv_AA12_GraphInputsV5PhaseVtF + 110
13 SwiftUI 0x00007fff560db230 $s7SwiftUI11DynamicBodyV11updateValueyyF + 512
14 SwiftUI 0x00007fff55df081a $s14AttributeGraph0A0VyACyxGqd__c5ValueQyd__RszAA12StatefulRuleRd__lufcADSPyqd__GXEfU_ySv_So11AGAttributeatcyXEfU_ySv_AJtcqd__mcfu_ySv_AJtcfu0_TA + 26
15 AttributeGraph 0x00007fff4ba16d03 _ZN2AG5Graph11UpdateStack6updateEv + 505
16 AttributeGraph 0x00007fff4ba17199 _ZN2AG5Graph16update_attributeENS_4data3ptrINS_4NodeEEEb + 335
17 AttributeGraph 0x00007fff4ba1f245 _ZN2AG8Subgraph6updateEj + 781
18 SwiftUI 0x00007fff56407baa $s7SwiftUI9GraphHostC14runTransactionyyF + 186
19 SwiftUI 0x00007fff5640b6bf $s7SwiftUI9GraphHostC14runTransaction33_30C09FF16BC95EC5173809B57186CAC3LLyyAA05AsyncF0AELLCF + 79
20 SwiftUI 0x00007fff5640a1e3 $s7SwiftUI9GraphHostC17flushTransactionsyyF + 211
21 SwiftUI 0x00007fff5640b65f $s7SwiftUI9GraphHostC16asyncTransaction_8mutation5styleyAA0F0V_xAA01_C14Mutation_StyleOtAA0cI0RzlFyycfU_yACXEfU_ + 15
22 SwiftUI 0x00007fff5640ab49 $s7SwiftUI9GraphHostCIgg_ACytIeggr_TR03$s7a3UI9cD92C16asyncTransaction_8mutation5styleyAA0F0V_xAA01_C14Mutation_StyleOtAA0cI0RzlFyycfU_yACXEfU_Tf3nnpf_n + 9
23 SwiftUI 0x00007fff55ef7091 $s7SwiftUI17ViewGraphDelegatePAAE06updateD04bodyqd__qd__AA0D4HostCXE_tlFqd__AA0cD0CXEfU_TA + 17
24 SwiftUI 0x00007fff5636dada $s7SwiftUI16ViewRendererHostPAAE06updateC5Graph4bodyqd__qd__AA0cG0CXE_tlFqd__yXEfU_ + 74
25 SwiftUI 0x00007fff56361319 $s7SwiftUI16ViewRendererHostPAAE06updateC5Graph4bodyqd__qd__AA0cG0CXE_tlF + 73
26 SwiftUI 0x00007fff563611a9 $s7SwiftUI14_UIHostingViewCyqd__GAA0D13GraphDelegateA2aEP06updatedE04bodyqd__qd__AA0dE0CXE_tlFTW + 25
27 SwiftUI 0x00007fff55ef3237 $s7SwiftUI17ViewGraphDelegatePAAE06updateD04bodyqd__qd__AA0D4HostCXE_tlF + 55
28 SwiftUI 0x00007fff55ef31f9 $s7SwiftUI14_UIHostingViewCyqd__GAA13GraphDelegateA2aEP06updateE04bodyqd__qd__AA0E4HostCXE_tlFTW + 25
29 SwiftUI 0x00007fff5640b63a $s7SwiftUI9GraphHostC4dataA2C4DataV_tcfcyycfU_Tm + 122
30 SwiftUI 0x00007fff5640cce3 $s7SwiftUI9GraphHostC16asyncTransaction_8mutation5styleyAA0F0V_xAA01_C14Mutation_StyleOtAA0cI0RzlFyycfU_TA.11 + 19
31 SwiftUI 0x00007fff55f13d0c $sIeg_ytIegr_TR + 12
32 SwiftUI 0x00007fff55c31011 $sIeg_ytIegr_TRTA + 17
33 SwiftUI 0x00007fff55c30eb3 $sSo9NSRunLoopC7SwiftUIE14flushObserversyyFZ + 115
34 SwiftUI 0x00007fff55c30e39 $sSo9NSRunLoopC7SwiftUIE11addObserveryyyycFZySo05CFRunbF3RefaSg_So0gB8ActivityVSvSgtcfU_yyXEfU_ + 9
35 SwiftUI 0x00007fff55c2b35e $ss5Error_pIgzo_ytsAA_pIegrzo_TR95$sSo9NSRunLoopC7SwiftUIE11addObserveryyyycFZySo05CFRunbF3RefaSg_So0gB8ActivityVSvSgtcfU_yyXEfU_Tf3npf_n + 14
36 libswiftObjectiveC.dylib 0x00007fff53c04f8e $s10ObjectiveC15autoreleasepool8invokingxxyKXE_tKlF + 46
37 SwiftUI 0x00007fff55c30e23 $sSo9NSRunLoopC7SwiftUIE11addObserveryyyycFZySo05CFRunbF3RefaSg_So0gB8ActivityVSvSgtcfU_ + 35
38 SwiftUI 0x00007fff55c30f2b $sSo9NSRunLoopC7SwiftUIE11addObserveryyyycFZySo05CFRunbF3RefaSg_So0gB8ActivityVSvSgtcfU_To + 43
39 CoreFoundation 0x00007fff203a76b3 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
40 CoreFoundation 0x00007fff203a1f3f __CFRunLoopDoObservers + 547
41 CoreFoundation 0x00007fff203a24e2 __CFRunLoopRun + 1113
42 CoreFoundation 0x00007fff203a1b9e CFRunLoopRunSpecific + 567
43 GraphicsServices 0x00007fff2b793db3 GSEventRunModal + 139
44 UIKitCore 0x00007fff2466d40f -[UIApplication _run] + 912
45 UIKitCore 0x00007fff24672320 UIApplicationMain + 101
46 SwiftUI 0x00007fff5639fdf7 $s7SwiftUI17KitRendererCommon33_ACC2C5639A7D76F611E170E831FCA491LLys5NeverOyXlXpFAESpySpys4Int8VGSgGXEfU_ + 119
47 SwiftUI 0x00007fff5639fd6f $s7SwiftUI6runAppys5NeverOxAA0D0RzlF + 143
48 SwiftUI 0x00007fff55eeee5d $s7SwiftUI3AppPAAE4mainyyFZ + 61
49 WriteFreely-MultiPlatform 0x000000010882c711 $s25WriteFreely_MultiPlatform0ab1_cD3AppV5$mainyyFZ + 33
50 WriteFreely-MultiPlatform 0x000000010882c7c4 main + 20
51 libdyld.dylib 0x00007fff20257409 start + 1
52 ??? 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
*** Terminating app due to uncaught exception 'NSGenericException', reason: '*** Collection <__NSCFSet: 0x600002830cf0> was mutated while being enumerated.'
terminating with uncaught exception of type NSException
CoreSimulator 732.18.0.2 - Device: iPhone 12 Pro Max (D6B75BB9-C1A7-49AD-916B-EBACFE8D5C24) - Runtime: iOS 14.1 (18A8394) - DeviceType: iPhone 12 Pro Max