Can't add new post to firebase database

[KhaoulaBF]

I try to add post (even the first doesn't work)
but nothing seems to work.

[nielnielnielniel]

me nither.

[nielnielnielniel]

me nither.

[plamenna-petrova]

I ran into the same problem and solved it by adding the link to the database as argument to the FirebaseDatabase.getInstance() method. Example : FirebaseDatabase database = FirebaseDatabase.getInstance("https://myexampleproject.firebasedatabase.app/");