The error is coming at the time of debugginh

[amritkumarj]

The following NoSuchMethodError was thrown building StreamBuilder(dirty, state: _StreamBuilderBaseState<DocumentSnapshot, AsyncSnapshot>#7f7d8):
The method '[]' was called on null.
Receiver: null
Tried calling:

[amritkumarj]

The following NoSuchMethodError was thrown building StreamBuilder(dirty, state: _StreamBuilderBaseState<DocumentSnapshot, AsyncSnapshot>#7f7d8):
The method '[]' was called on null.
Receiver: null
Tried calling:

[amritkumarj]

The following NoSuchMethodError was thrown building StreamBuilder(dirty, state: _StreamBuilderBaseState<DocumentSnapshot, AsyncSnapshot>#7f7d8):
The method '[]' was called on null.
Receiver: null
Tried calling:

[amritkumarj]

I am trying to add
Tried calling : [] ("caller id")

[takiuddin93]

App also crashes without giving any error in the log.
it doesn't open.

at what point does it crash?

[scorchy38]

App also crashes without giving any error in the log.
it doesn't open.

at what point does it crash?

This because I think it is trying to fetch something from database and since we have a new database with no collections, null error is there, can you please provide your firebase firestore database screenshots, or you can export it in json format using this and share it here somewhere?