anyone help me please, i want to make register app with rfid and using firebase rtdb but the app cant receiving data from rtdb

[Adrian_Rizki_Nur_Prasetyo]

hey,anyone help me please, i want to make register app with rfid and using firebase rtdb but the app cant receiving data from rtdb,i’m stuck, how to make the blocks ,please help me

[Gaston (zodiaclogic)]