快照侦听器中未捕获的错误：FirebaseError：找不到匹配的索引

Question

I'm getting the above error when running the following query. I've not seen it before, can't find any documentation about it, and I'm not doing anything unusual or anything I've not done before. Can anyone shed any light on it, please?

const getUserProjects = async () => {
    return await useFireStore
    .collection('projects')
    .where('paid','==',true)
    .where('ownerId','==', `${currentUser.uid}`)
    .orderBy('createdAt', 'desc')
    .onSnapshot(snapshot => {
        let projects = [];
        snapshot.forEach(doc => {
            projects.push({...doc.data(), id: doc.id })
        });
        setUserProjects(projects);
    });
};

It is a 'new' query in that I've just added it to the code, so I might expect the error in the console that gives a link for a new composite index to be created or whatever it's called, but I'm just getting this instead:

EDIT: I have tried manually creating an Index, but I still get the same error. I have also got a query on the same page which is exactly the same apart from the collection name, and that works fine.

Answer 1

This is an internal bug in the SDK.

Firebase team is working on it, follow the issue here .

Answer 2

That's a known issue with Client SDKs . However the Admin SDK still works as usual and returns throws an error containing the link to create index and can be used a workaround. Just use the Firebase Functions Emulator locally with the Admin SDK.

Use an existing Firebase project or create a new one for this:

firebase init functions

Copy the following function:

export const getIndexLink = functions.https.onRequest(async (request, response) => {
    try {
        const snap = await admin.firestore()...get()
        // Paste your query here
        response.send(snap.size, "matched documents");
    } catch (error) {
        console.log(error)
        response.send(error.message)
        // This error will contain the index creation link
    }
});

Run the function emulator:

firebase emulators:start --only functions

Open a browser and paste your getIndexLink function's URL and you should have the URL to create index there.

Answer 3

The problem is you must create an index for your "where" and "orderBy" conditions in the indexes column in your cloud firestore.

Official documentation:

1. Manage indexes in Cloud Firestore
2. Indexes and pricing

Answer 4

you have to create a new index manually from firestore console

1. Go to the Cloud Firestore section of the Firebase console.
2. Go to the Indexes tab and click Add index.
3. Enter the name of the collection and set the fields you want to use to sort the index.
4. Click Create.

more information: https://firebase.google.com/docs/firestore/query-data/indexing?authuser=0#create_a_missing_index_through_an_error_message