[Solved][Flutter] Error: The getter 'docs' isn't defined for the type 'Object'

[Solved][Flutter]

Error: The getter 'docs' isn't defined for the type 'Object'

 

문제 상황 (Problem)

StreamBuilder(
    stream: FirebaseFirestore.instance
. . .
)

위 코드에서 에러가 발생한다.

Error: The getter 'docs' isn't defined for the type 'Object'

 

해결 방법 (Solution)

StreamBuilder를 StreamBuilder<QuerySnapshot> 로 변경하면 된다.

StreamBuilder<QuerySnapshot> (
    stream: FirebaseFirestore.instance
. . .
)