我已经用android studio在flutter中构建了一个应用程序，并试图在play store上发布。
根据https：//flutter.dev/docs/deployment/android#reviewing-the-build-configuration，“运行flutter build appbundle（运行flutter构建默认为发布构建。）”x1c 0d1xx 1c 1d 1x
然而，当我尝试在Play控制台上上传此文件时，我收到错误消息“您上传了一个在调试模式下签名的APK或Android应用程序捆绑包。您需要在发布模式下签名您的APK或Android应用程序捆绑包。”

我应该做些什么不同的事情？
从我的gradle.build：

def keystoreProperties = new Properties()
def keystorePropertiesFile = rootProject.file('key.properties')
if (keystorePropertiesFile.exists()) {
    keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
}

android {
    compileSdkVersion 29

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

    lintOptions {
        disable 'InvalidPackage'
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId "com.rtterror.custom_snooze_alarm"
        minSdkVersion 16
        targetSdkVersion 29
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
    }

    signingConfigs {
        release {
            keyAlias keystoreProperties['keyAlias']
            keyPassword keystoreProperties['keyPassword']
            storeFile keystoreProperties['storeFile'] ? file(keystoreProperties['storeFile']) : null
            storePassword keystoreProperties['storePassword']
        }
    }

    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
        }
    }
}

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