안드로이드 빌드 오류

[김윤호]

안녕하세요
어느 순간 갑자기 안드로이드 빌드 오류가 떠서 여쭤봅니다

오류 코드는 다음과 같습니다.

FAILURE: Build failed with an exception.

* Where:
Build file '/Users/yunho/Desktop/Programming/flutter/el_sports/android/app/build.gradle' line: 40

* What went wrong:
A problem occurred evaluating project ':app'.
> Could not find method kotlinOptions() for arguments [build_9xhye33cl16uqbx7yun7xggj9$_run_closure2$_closure6@555f300e] on extension 'android' of type com.android.build.gradle.internal.dsl.BaseAppModuleExtension.

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 3s
Exception: Gradle task assembleDebug failed with exit code 1

그리고 android/app/build.gradle 파일은 다음과 같습니다

def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
    localPropertiesFile.withReader('UTF-8') { reader ->
        localProperties.load(reader)
    }
}

def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}

def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
    flutterVersionCode = '1'
}

def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
    flutterVersionName = '1.0'
}

apply plugin: 'com.android.application'
// START: FlutterFire Configuration
apply plugin: 'com.google.gms.google-services'
// END: FlutterFire Configuration
//apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"

android {
    compileSdkVersion flutter.compileSdkVersion
    ndkVersion flutter.ndkVersion

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    kotlinOptions {
        jvmTarget = '1.8'
    }

    sourceSets {
        main.java.srcDirs += 'src/main/kotlin'
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId "com.easylife.el_sports"
        // You can update the following values to match your application needs.
        // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
        minSdkVersion 23
        targetSdkVersion flutter.targetSdkVersion
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
    }

    buildTypes {
        release {
            // TODO: Add your own signing config for the release build.
            // Signing with the debug keys for now, so `flutter run --release` works.
            signingConfig signingConfigs.debug
        }
    }
}

flutter {
    source '../..'
}

dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
}

그리고 오류코드의 * Where: Build file '/Users/yunho/Desktop/Programming/flutter/el_sports/android/app/build.gradle' line: 40
40번째 줄은
kotlinOptions {
    jvmTarget = '1.8'
}
이 코드입니다.

구글링도 해보고 stackoverflow에 질문도 해보았지만 해결하지 못하였습니다
어떻게 해결해야될까요?

[codingapple]

프로젝트에서 터미널켜서 flutter clean / flutter pub get눌러봅시다 
아니면 새로 프로젝트 만들어서 거기로 옮깁시다

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