[cloud_firestore] FirebaseAuth.instance.signOut() causes crash

[nyvelius]

Steps to Reproduce

1. Switch to a new screen of type StatefulWidget using pushReplacementNamed.
2. In the new screen, Call FirebaseAuth.instance.signOut() from initState()
3. Result in logs below.

Logs

*** First throw call stack:
(
	0   CoreFoundation                      0x000000010e75412b __exceptionPreprocess + 171
	1   libobjc.A.dylib                     0x000000010dde8f41 objc_exception_throw + 48
	2   CoreFoundation                      0x000000010e7940cc _CFThrowFormattedException + 194
	3   CoreFoundation                      0x000000010e668951 -[__NSPlaceholderDictionary initWithObjects:forKeys:count:] + 321
	4   CoreFoundation                      0x000000010e6687db +[NSDictionary dictionaryWithObjects:forKeys:count:] + 59
	5   Runner                              0x000000010a0ef0db __51-[FLTCloudFirestorePlugin handleMethodCall:result:]_block_invoke.454 + 635
	6   Runner                              0x000000010a35cee5 __72-[FIRDocumentReference addSnapshotListenerInternalWithOptions:listener:]_bl<…>
Lost connection to device.

Flutter Doctor

flutter doctor -v
[✓] Flutter (Channel beta, v0.1.5, on Mac OS X 10.13.3 17D102, locale en-SE)
    • Flutter version 0.1.5 at /Users/mikael/Library/flutter
    • Framework revision 3ea4d06340 (4 weeks ago), 2018-02-22 11:12:39 -0800
    • Engine revision ead227f118
    • Dart version 2.0.0-dev.28.0.flutter-0b4f01f759

[✓] Android toolchain - develop for Android devices (Android SDK 27.0.3)
    • Android SDK at /Users/mikael/Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-27, build-tools 27.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b08)

[✓] iOS toolchain - develop for iOS devices (Xcode 9.2)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 9.2, Build version 9C40b
    • ios-deploy 1.9.2
    • CocoaPods version 1.4.0

[✓] Android Studio (version 3.0)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b08)

[✓] IntelliJ IDEA Ultimate Edition (version 2017.3.5)
    • Flutter plugin version 22.2.2
    • Dart plugin version 173.4700

[✓] Connected devices (3 available)
    • iPhone 7 • F215FCBC-D6DE-4C2B-B1D9-E81C3CD4DC14     • ios           • iOS 11.2 (simulator)

• No issues found!

[blaneyneil]

same here, though it only started happening recently and i can't figure out why.

Lost connection to device.
*** First throw call stack:
(
	0   CoreFoundation                      0x00000001116f47f6 __exceptionPreprocess + 294
	1   libobjc.A.dylib                     0x0000000110d66035 objc_exception_throw + 48
	2   CoreFoundation                      0x000000011164005c _CFThrowFormattedException + 194
	3   CoreFoundation                      0x0000000111763cf1 -[__NSPlaceholderDictionary initWithObjects:forKeys:count:] + 321
	4   CoreFoundation                      0x00000001116f031b +[NSDictionary dictionaryWithObjects:forKeys:count:] + 59
	5   Runner                              0x000000010d4e739b __51-[FLTCloudFirestorePlugin handleMethodCall:result:]_block_invoke.537 + 635
	6   Runner                              0x000000010d2556ff __72-[FIRDocumentReference addSnapshotListenerInternalWithOptions:listener:]_bl<…>

my method is this:

static FirebaseAuth _auth = FirebaseAuth.instance;
Future<void> logoutUser() async{
  return _auth.signOut();
}

and it's called on the page like this:

void _logout() async {
  setState(() {_isLoading = true;});
  try { 
    await _auth.logoutUser();
    setState(() {_isLoading = false;});
    Navigator.of(context).pushReplacementNamed('/splash');
  } catch(e) {
    print(e);}
  }
}

[zoechi]

@Hixie

[blaneyneil]

i narrowed it down, at least in my use case, as being a result of using a streambuilder (anywhere in the app) with a DocumentSnapshot rather than a QuerySnapshot.

my sample logout call is this:

FirebaseAuth.instance.logoutUser().then((_){
      print('success logging out');
    }).catchError((e) {
      print('failure logging out');
      print(e);
    });

which executes successfully and then crashes:

flutter: success logging out
*** First throw call stack:
(
	0   CoreFoundation                      0x000000011329a7f6 __exceptionPreprocess + 294
	1   libobjc.A.dylib                     0x00000001123be035 objc_exception_throw + 48
	2   CoreFoundation                      0x00000001131e605c _CFThrowFormattedException + 194
	3   CoreFoundation                      0x0000000113309cf1 -[__NSPlaceholderDictionary initWithObjects:forKeys:count:] + 321
	4   CoreFoundation                      0x000000011329631b +[NSDictionary dictionaryWithObjects:forKeys:count:] + 59
	5   Runner                              0x000000010eb3e8bb __51-[FLTCloudFirestorePlugin handleMethodCall:result:]_block_invoke.537 + 635
Lost connection to device.
	6   Runner                              0x000000010e8acc1f __72-[FIRDocumentReference addSnapshotListenerInternalWithOptions:listener:]_bl<…>

i traced it back to a StatelessWidget i use that returns a StreamBuilder. when i make the stream a QuerySnapshot then everything is fine:

stream: dbProfiles.where('lastname', isEqualTo: 'Blaney').snapshots(),
builder: (BuildContext context, AsyncSnapshot<QuerySnapshot> snapshot) {

but if i use a DocumentSnapshot (anywhere in the app):

stream: dbProfiles.document(profileID).snapshots(),
builder: (BuildContext context, AsyncSnapshot<DocumentSnapshot> snapshot) {

then it results in the crash above.

[zoechi]

@blaneyneil did you check you have the latest version of all plugins you are using?

[blaneyneil]

yep:

firebase_auth: "^0.5.11"
cloud_firestore: "^0.7.3"
firebase_storage: "^0.3.7"

[latesr]

I am getting the same crash on when calling FirebaseAuth.instance.signOut()

*** First throw call stack:
(
	0   CoreFoundation                      0x000000010b27d1e6 __exceptionPreprocess + 294
	1   libobjc.A.dylib                     0x000000010a912031 objc_exception_throw + 48
	2   CoreFoundation                      0x000000010b2bd0bc _CFThrowFormattedException + 194
	3   CoreFoundation                      0x000000010b190951 -[__NSPlaceholderDictionary initWithObjects:forKeys:count:] + 321
	4   CoreFoundation                      0x000000010b1907db +[NSDictionary dictionaryWithObjects:forKeys:count:] + 59
	5   Runner                              0x000000010675698b __51-[FLTCloudFirestorePlugin handleMethodCall:result:]_block_invoke.537 + 635
	6   Runner                              0x00000001065aee1f __72-[FIRDocumentReference addSnapshotListenerInternalWithOptions:listener:]_bl<…>

Flutter (Channel beta, v0.5.1, on Mac OS X 10.13.5 17F77, locale en-GB)

firebase_auth: 0.5.11
cloud_firestore: 0.7.3

[zoechi]

Voting for issues using "Add reaction" on the initial comment is a good idea to rise priority.

[felixmccuaig]

Has this been resolved yet?

[AndrewPetrovics]

Same issue. Preventing us from releasing. Please help :)

[mwesolek]

Same issue here!

[mwesolek]

I was able to prevent the crashing for the issue by adding a try catch to line 406 of CloudFirestorePlugin.m

@try {
    [self.channel invokeMethod:@"DocumentSnapshot"
                      arguments:@{ 
                          @"handle" : handle, 
                          @"path" : snapshot.reference.path,
                          @"data" : snapshot.exists ? snapshot.data : [NSNull null],
                        }];
            }
 @catch (NSException *exception) {
     // Handle exception here
  }

This is not going to solve the root of the problem, but at least for now it prevents the app from crashing on sign out.