Error: Configuration with name 'default' not found in Android Studio

I am using the volley library to perform network operation in android. So I am trying to add this library in my project which is created in Android Studio and gradle system. I added the volley library in my project but when I sync with gradle then I am getting error message. I tried all the answers which I see here but nothing worked for me. Error message : Configuration with name 'default' not found in Android Studio Volley/build.gradle ``` apply plugin: 'android-library' android { compileSdkVersion 19 buildToolsVersion '19.0.1' sourceSets { defaultConfig { minSdkVersion 8 targetSdkVersion 19 } main { assets.srcDirs = ['assets'] res.srcDirs = ['res'] aidl.srcDirs = ['src'] resources.srcDirs = ['src'] renderscript.srcDirs = ['src'] java.srcDirs = ['src'] manifest.srcFile 'AndroidManifest.xml' } } } ``` app/build.gradle ``` apply plugin: 'android' android { compileSdkVersion 19 buildToolsVersion '19.0.1' defaultConfig { minSdkVersion 8 targetSdkVersion 19 versionCode 1 versionName "1.0" } buildTypes { release { runProguard false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt' } } } dependencies { compile 'com.android.support:appcompat-v7:19.+' compile project(':library:volley') } ``` root/build.gradle ``` // Top-level build file where you can add configuration options common to all sub-projects/modules. buildscript { repositories { mavenCentral() } dependencies { classpath 'com.android.tools.build:gradle:0.9.1' } } allprojects { repositories { mavenCentral() } } ``` settings.gradle ``` include ':app' include ':library:volley' ```