Firebase Runtime error in my app

[Arpit_sahu]

I use firebase auth in my app and fully setup firebase. i also fill firebase core. When i install app in my phone Runtime error show. I added 1 user in firebase atuh.

AIA OR APK(if Any)

[Horizon]

Please show the blocks concerned with firebase

[Arpit_sahu]

[Arpit_sahu]

please tell me a solution soon as soon possible

[iaditya_nanda]

@Arpit_sahu remove this block and try again use tiny db for storing login

[Pablo_Almeida]

The problem happens everytime screen initialise? if so, remove the initialise block and use it inside a clock one second after the screen initialised and see if the problem is solved.
It would be good if you used a else block with isusersignedin too, just to check if the block is working correctly