I have been following a tutorial about how to make sign up and login but mine error because of this

[Muhammad_Muizzuddin]

[Peter]

So your companion is working again?
https://community-appinventor-mit-edu.ezproxy.canberra.edu.au/t/companion-does-not-work/100016/4

[Ria_Das]

See

Project app crashes. (Using experimental FirebaseDB element)

Problem most probably caused because of database location either ... or use an extension