The realtime database is not returning any data (Flutter)

[Futurepocket]

Hi Guys, since I realized that firebase had been updated I have been spending hours trying to get information from it as I was before but with no luck.
I am attaching screenshots of my code.
I already changed the code in my Stream Publisher due to the change in real-time database now returning Object? instead of Map,
but it wasn't enough. I have no problems writing to the database but I can't seem to read it properly with this method.