Why I get following error?  

I wanted to update my support libraries from Android and searched alot but didn't find anything appropriate to my problem.

[![Android Studio Gradle sync error](https://i.stack.imgur.com/a8UeW.png)](https://i.stack.imgur.com/a8UeW.png)

here is my app.gradle:

```
apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.1"

    defaultConfig {
        applicationId "com.ussystech.calc"
        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'])
    compile 'com.android.support:appcompat-v7:23.1.0'
    compile 'com.android.support:recyclerview-v7:23.1.0'
    compile 'com.android.support:cardview-v7:23.1.0'
    compile 'com.android.support:design:23.0.1'

}

```