플러터(Flutter)/문제해결 (18) 썸네일형 리스트형 This requires the 'extension-methods' experiment to be enabled. error: This requires the 'extension-methods' experiment to be enabled. (experiment_not_enabled at [ble_flutter_example] lib\main.dart:18) error: Functions must have an explicit list of parameters. (missing_function_parameters at [ble_flutter_example] lib\main.dart:18) error: Undefined class 'extension'. (undefined_class at [ble_flutter_example] lib\main.dart:18) error: Undefined class 'on'. (und.. Undefined class 'StreamSubscription'. Try changing the name to the name of an existing class Undefined class 'StreamSubscription'. Try changing the name to the name of an existing class, or creating a class with the name 'StreamSubscription'. blog.naver.com/chandong83/221897816803 Undefined class 'StreamSubscription'. Try changing the name to the name of an existing class StreamSubscription 클래스를 사용하려는 데 아래와 같은 에러를 발생시키고선 실행을 하지 못하게 하고 ... blog.naver.com 이전 1 2 3 다음