Firebase Functions firestoreService.initializeApp() conflicting with admin.initializeApp() about firestore-backup-restore HOT 4 CLOSED

I was running the function every 1 minute to test. I changed it to every 24 hours and the error stopped even with both initializations.

from firestore-backup-restore.

@psico-digital you can use either firestoreService.initializeApp() or admin.initializeApp(). Don't use both.

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I also have this problem. Before adding firestore-backup-restore, I had:
admin.initializeApp({ credential: admin.credential.cert(serviceAccount), databaseURL: process.env.DATABASE_URL });

to init Firebase (successfully).
After adding it, doing
firestoreService.initializeApp(process.env.SERVICE_ACCOUNT_FILE, process.env.DATABASE_URL);
cause an error (duplicate Firebase initialization), but if I only leave firestoreService.initializeApp I get:

The default Firebase app does not exist. Make sure you call initializeApp() before using any of the Firebase services

from firestore-backup-restore.

Hi @eeschiavo, what happens if you only use admin to initialize the Firebase app?

admin.initializeApp({ 
credential: admin.credential.cert(serviceAccount), 
databaseURL: process.env.DATABASE_URL 
});

from firestore-backup-restore.