firebase

Firebase Auth Email Already In Use

auth/email-already-in-use

Fixes

1.Prompt user to sign in with existing account
2.Implement account linking for multiple providers
3.Check fetchSignInMethodsForEmail before creating

firebaseauthemail

Related Errors

firebase3 fixes

Firestore Permission Denied

PERMISSION_DENIED.*Missing or insufficient permissions

•Update Firestore security rules to allow the operation
•Check auth state - user may not be authenticated

firebase3 fixes

Firebase Quota Exceeded

Quota exceeded.*RESOURCE_EXHAUSTED

•Upgrade to Blaze plan for higher limits
•Optimize reads/writes to reduce usage

firebase3 fixes

Firestore Index Not Defined

The query requires an index.*create it here

•Click the link in the error to auto-create index
•Add composite index in firestore.indexes.json