AshutoshRaina 

You can't set the empty project bucket in the FirebaseDB. If empty then it create small bug from FirebaseDB. You have to set project bucket name.
If you can't able to set FirebaseDB project bucket name then set it from block. Check this image also
[upl-image-preview url=https://community.casagbic.com/assets/files/2020-03-18/1584512089-477453-bandicam-2020-03-18-12-14-33-602.jpeg]
Happy Casagbicing 🤝