so im making this program using pyrebase 4, and whenever i use this line of code for uploading data to the database in firebase dbreguser = db.child("Users").child("email_something").set(pushObj) everything goes well, but if I try to replace “email_something” with a str variable it gives me the next error

I am trying download a specific picture named ‘giuitarplay.jpg’ from my firebase storage bucket but for some reasons the program runs without any errors but no file is actually getting downloaded.