* What went wrong: A problem occurred configuring project ':firebase_core'. > com.android.builder.errors.EvalIssueException: defaultConfig contains custom BuildConfig fields, but the feature is disabled. 해당 플러그인 라이브러리에 접근해서 build.gradle 에서 BuildConfig 를 사용할 수 있게 설정하면 된다 buildFeatures { buildConfig = true } Running Gradle task 'assembleDebug'... ../../.pub-cache/hosted/pub.dev/stream_chat_flutter..