How to fix EXC_BAD_ACCESS KERN_INVALID_ADDRESS crash? - ios

Question

Description
This is a crash that occurs within seconds of a user opening the app.
This crash occurs randomly, it is not reproducible.
This crash occurs in one place only, in the method that queries all of the user's posts
I have multiple methods that are structured similarly to this method that query different sets of data and the crash does not occur in those methods.
I have checked the data being queried and it is perfectly ok.
It appears that the crash occurs when the FIRDocumentSnapshot's data is trying to be used. (doc.data)
The try, catch block surrounding the method does not prevent the crash.
I am all out of ideas of what to do.
Crashed: com.apple.main-thread
0 FirebaseFirestore 0x905a4 -[FSTUserDataWriter convertedValue:] + 268
1 FirebaseFirestore 0x906cc -[FSTUserDataWriter convertedObject:] + 120
2 FirebaseFirestore 0x90610 -[FSTUserDataWriter convertedValue:] + 376
3 FirebaseFirestore 0x5865c -[FIRDocumentSnapshot dataWithServerTimestampBehavior:] + 200
4 FirebaseFirestore 0x58b14 -[FIRQueryDocumentSnapshot dataWithServerTimestampBehavior:] + 44
5 FirebaseFirestore 0x58a70 -[FIRQueryDocumentSnapshot data] + 44
6 WeDivvy 0x1189c __125-[GetDataObject GetDataGetItemsInSpecificHome:collection:keyArray:currentViewController:crashlyticsString:completionHandler:]_block_invoke + 1408 (GetDataObject.m:1408)
7 FirebaseFirestore 0x87db0 -[FIRQuery wrapQuerySnapshotBlock:]::Converter::OnEvent(firebase::firestore::util::StatusOr<firebase::firestore::api::QuerySnapshot>) + 128
8 FirebaseFirestore 0x11ce0c firebase::firestore::api::Query::GetDocuments(firebase::firestore::api::Source, std::__1::unique_ptr<firebase::firestore::core::EventListener<firebase::firestore::api::QuerySnapshot>, std::__1::default_delete<firebase::firestore::core::EventListener<firebase::firestore::api::QuerySnapshot> > >&&)::ListenOnce::OnEvent(firebase::firestore::util::StatusOr<firebase::firestore::api::QuerySnapshot>) + 352
9 FirebaseFirestore 0x11d3b8 firebase::firestore::api::Query::AddSnapshotListener(firebase::firestore::core::ListenOptions, std::__1::unique_ptr<firebase::firestore::core::EventListener<firebase::firestore::api::QuerySnapshot>, std::__1::default_delete<firebase::firestore::core::EventListener<firebase::firestore::api::QuerySnapshot> > >&&)::Converter::OnEvent(firebase::firestore::util::StatusOr<firebase::firestore::core::ViewSnapshot>) + 756
10 FirebaseFirestore 0x3d15c void std::__1::__invoke_void_return_wrapper<void, true>::__call<firebase::firestore::core::AsyncEventListener<firebase::firestore::core::ViewSnapshot>::OnEvent(firebase::firestore::util::StatusOr<firebase::firestore::core::ViewSnapshot>)::'lambda'()&>(firebase::firestore::core::AsyncEventListener<firebase::firestore::core::ViewSnapshot>::OnEvent(firebase::firestore::util::StatusOr<firebase::firestore::core::ViewSnapshot>)::'lambda'()&) + 104
11 FirebaseFirestore 0x151604 firebase::firestore::util::Task::ExecuteAndRelease() + 184
12 libdispatch.dylib 0x647c8 _dispatch_client_callout + 16
13 libdispatch.dylib 0x45f18 _dispatch_main_queue_drain + 888
14 libdispatch.dylib 0x45b90 _dispatch_main_queue_callback_4CF$VARIANT$armv81 + 36
15 CoreFoundation 0x93848 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 12
16 CoreFoundation 0x774d4 __CFRunLoopRun + 2096
17 CoreFoundation 0x7bb7c CFRunLoopRunSpecific + 584
18 GraphicsServices 0x1984 GSEventRunModal + 160
19 UIKitCore 0x3753c8 -[UIApplication _run] + 868
20 UIKitCore 0x375040 UIApplicationMain + 312
21 WeDivvy 0x1af38 main + 18 (main.m:18) 22 ??? 0x1d7bc4df0 (Missing)
x
-(void)GetDataGetItemsInSpecificHome:(NSString *)homeID collection:(NSString *)collection keyArray:(NSArray *)keyArray currentViewController:(UIViewController *)currentViewController crashlyticsString:(NSString *)crashlyticsString completionHandler:(void (^)(BOOL finished, NSMutableDictionary *returningDataDict))finishBlock {
#try {
[[FIRCrashlytics crashlytics] logWithFormat:#"GetDataGetItemsInSpecificHome %# Processing(1)", collection];
__block NSMutableDictionary *dataDict = [NSMutableDictionary dictionary];
FIRFirestore *defaultFirestore = [FIRFirestore firestore];
[[[defaultFirestore collectionWithPath:collection] queryWhereField:#"ItemHomeID" isEqualTo:homeID] getDocumentsWithCompletion:^(FIRQuerySnapshot * _Nullable snapshot, NSError * _Nullable error) {
[[FIRCrashlytics crashlytics] logWithFormat:#"GetDataGetItemsInSpecificHome %# Processing(2)", collection];
for (FIRDocumentSnapshot *doc in snapshot.documents) {
[[FIRCrashlytics crashlytics] logWithFormat:#"GetDataGetItemsInSpecificHome Processing(3)"];
for (NSString *key in keyArray) {
[[FIRCrashlytics crashlytics] logWithFormat:#"GetDataGetItemsInSpecificHome:%# key:%# Processing(4)", crashlyticsString, key];
NSMutableArray *arr = dataDict[key] ? [dataDict[key] mutableCopy] : [NSMutableArray array];
******************************CRASH OCCURS HERE**********************************
NSDictionary *docData = doc.data ? doc.data : [Dictionary dictionary];
******************************CRASH OCCURS HERE**********************************
id object = doc.data[key] ? doc.data[key] : [[[GeneralObject alloc] init] GenerateDefaultValueBasedOnKey:key]; [arr addObject:object]; [dataDict setObject:arr forKey:key];
}
}
finishBlock(YES, dataDict);
} #catch (NSException *exception) {
finishBlock(YES, [NSMutableDictionary dictionary]);
}
}