Error when appending value to specific Tag in Firebase

[Mohamed_Tamer]

Hi @Chirubot,welcoem to the community !
for using append value in your app, your tag should contain a value, it can’t be empty , or doesn’t exist, or one of those reasons:
Also see here:

Firebase DB Append Value

[image] “FirebaseError: Previous value was empty.” The value is a list and is not empty… why do i always get this error? The Append block do not work like that? [image]

Kodular / Firebase Error

Hello I’m from Brazil. I am making an application for the teenagers in my church and almost finishing the application, I went to do some tests and returns this error to me: “Previous Value was Empty Error # 1150”. I thought it was something from my app, but I did another project, simple, just 1 field and a button and it gives the same error. I do not know what to do. I’ve searched everywhere, here on Kodular, on the internet, nothing … Help me please.! Erro Kodular|690x244