Firebase 썸네일형 리스트형 [Flutter] Firebase core 블랙 화면 오류 들어가며.. 아래와 같은 오류가 발생했다. E/flutter (25523): [ERROR:flutter/lib/ui/ui_dart_state.cc(199)] Unhandled Exception: Null check operator used on a null value E/flutter (25523): #0 MethodChannel.binaryMessenger (package:flutter/src/services/platform_channel.dart:142:86) E/flutter (25523): #1 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:148:36) E/flutter (25523): #2 Meth.. 더보기 이전 1 다음