失败：生成失败，出现异常。

• 其中：构建文件"D：...\QRTic\QRTic_Customer\flutter_application_1\android\app\build.gradle"行：34
• 出了什么问题：评估项目"：app"时出现问题。

无方法签名：build_736eq4o62b75hodqgip5fud2k.android（）适用于参数类型：（构建_736eq4o62b75hodqgip5fud2k$_run_closure3）值：[构建_736eq4o62b75hodqgip5fud2k$_run_closure3@389d26e3]
构建等级为：

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

androidExtensions {
    experimental = true
}

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.example.flutter_application_1"
        // You can update the following values to match your application needs.
        // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-build-configuration.
        minSdkVersion flutter.minSdkVersion
        targetSdkVersion flutter.targetSdkVersion
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
    }

    signingConfigs{
        debug{
            keyAlias 'qrtic'
            storePassword '123456'
            storeFile file('qrtic.jks')
            keypassword '123456'
        }
    }

    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
        }
        debug {
            // 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
        }
    }
}

有人知道错误的原因吗？我需要修复什么？