I am working on an app. In my app there is no error in code but when I try to run my project it gives following errors.

Error:(1, 1) A problem occurred evaluating project ':app'.

Failed to apply plugin [id 'com.android.application']

Could not create plugin of type 'AppPlugin'.

I try this also Gradle is issuing an error "Could not create plugin of type 'AppPlugin'"

and this also Gradle errors in Android Studio

Following is my build.gradle file

apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'

android {

    compileSdkVersion 23
    buildToolsVersion "21.1.2"

    defaultConfig {
        applicationId "com.praval.healthfreak"
        minSdkVersion 15
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    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-v7:23.2.1'
    compile 'com.google.android.gms:play-services:8.3.0'
    compile 'de.hdodenhof:circleimageview:1.3.0'
    compile 'com.android.support:design:23.2.1'
    compile files('libs/YouTubeAndroidPlayerApi.jar')

}