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Error:Execution failed for task ':app:ndkBuild'.
> Process 'command 'C:\Users\Administrator\AppData\Local\Android\sdk\ndk-bundle\ndk-build.cmd'' finished with non-zero exit value 2apply plugin: 'com.android.application'
import org.apache.tools.ant.taskdefs.condition.Osandroid {
    compileSdkVersion 27
    buildToolsVersion "26.0.2"    defaultConfig {
        applicationId "com.example.win764z.facedetect"
        minSdkVersion 19
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"
        multiDexEnabled true
        ndk {
            moduleName "FaceClientJni"
            ldLibs"log","z","m"
            abiFilters"armeabi","armeabi-v7a","x86"
        }
    }
    sourceSets.main {
        jni.srcDirs = [] //disable automatic ndk-build call
        jniLibs.srcDir 'app/src/main/libs'
    }    task ndkBuild(type: Exec) {
//        Properties properties = new Properties()
//        properties.load(project.rootProject.file('local.properties').newDataInputStream())
//        def ndkDir = properties.getProperty('ndk.dir')
        if (Os.isFamily(Os.FAMILY_WINDOWS)) {
            commandLine 'C:\\Users\\Administrator\\AppData\\Local\\Android\\sdk\\ndk-bundle\\ndk-build.cmd', '-C', file('app/src/main/jni').absolutePath
        } else {
            commandLine 'ndk-build', '-C', file('app/src/main/jni').absolutePath
        }
    }    tasks.withType(JavaCompile) {
        compileTask -> compileTask.dependsOn ndkBuild
    }    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:26.1.0'
    compile 'com.squareup.okhttp:okhttp:2.4.0'
    compile 'com.squareup.okio:okio:1.5.0'
    compile files('libs/jtds-1.3.0.jar')
    compile files('libs/android-async-http-1.4.6.jar')
}