How can I fix transaction error of firestore in flutter? - dart

Question

I'm implementing chat app and have to use transaction to synchronize messages of users. But, there are fatal error which terminates application abruptly. How can I deal with?
I searched many materials for this, but there was no solution. Github issue is related on this and I already wrote issue on this.
Future<void> sendMessage(String content,String receiver,String chatRoomID) async {
DocumentReference doc = Firestore.instance
.collection(firestoreMessageCollection)
.document(chatRoomID)
.collection(chatRoomID)
.document(DateTime.now().millisecondsSinceEpoch.toString());
await Firestore.instance.runTransaction((tx) async{
await tx.set(doc,{
firestoreChatFromField: sl.get<CurrentUser>().uid,
firestoreChatToField: receiver,
firestoreChatTimestampField: DateTime.now().millisecondsSinceEpoch.toString(),
firestoreChatContentField: content
});
});
}
I expected right result which transaction does normally, but below error is occurred and application was terminated.
E/AndroidRuntime( 1719): Caused by: java.lang.IllegalArgumentException: Provided document reference is from a different Firestore instance.
Even if I'm using same firestore instance, it is occurred continuously. Are there anyone who solved this horrible problem?

Answer 1

It was related on the firestore setting. When you initialize firestore settings, jus use Firestore.instance. If you use other instance, it occurs my error

Answer 2

I was also getting the same issue. It was fixed when I updated document reference code. Can you try changing document reference
from:
DocumentReference doc = Firestore.instance
.collection(firestoreMessageCollection)
.document(chatRoomID)
.collection(chatRoomID)
.document(DateTime.now().millisecondsSinceEpoch.toString());
to:
DocumentReference doc = Firestore.instance.document('$firestoreMessageCollection/$chatRoomID/$chatRoomID/${DateTime.now().millisecondsSinceEpoch.toString()}');
I also updated dependencies versions. In my case these are:
firebase_core: ^0.4.0+6
firebase_auth: 0.11.1+7
cloud_firestore: 0.12.5+2
firebase_storage: ^3.0.2
firebase_messaging: ^5.0.4
firebase_crashlytics: ^0.0.4+8