pre-dex errors when trying to run app on android lolipop device

[cyberformed]

Hii guys. Thanks for creating and sharing a good application. But the issue relies on whenever I am trying to run the application, it throws gradle-build as the error. Fir that reason I have removed and reinstalled again, but still no good luck with lollipop.

Here my gradle

`apply plugin: 'com.android.application'

android { compileSdkVersion 25 buildToolsVersion "25.0.1" // needed for okHttp from 23sdk. https://medium.com/android-news/android-networking-i-okhttp-volley-and-gson-72004efff196#.gsfpn3ez8 useLibrary 'org.apache.http.legacy'

dexOptions {
    javaMaxHeapSize "3g"
}

/*signingConfigs {
    release {
        try {
            storeFile file("openshopKeystore.jks")
            storePassword KEYSTORE_PASSWORD
            keyAlias KEYSTORE_ALIAS
            keyPassword KEY_PASSWORD
        } catch (ex) {
            throw new InvalidUserDataException("You should define KEYSTORE_PASSWORD, KEYSTORE_ALIAS and KEY_PASSWORD in gradle.properties." + ex)
        }
    }
}*/

defaultConfig {
    applicationId "bf.io.openshop"
    minSdkVersion 15
    targetSdkVersion 25
    versionCode 3
    versionName "1.2"
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    multiDexEnabled true
    //signingConfig signingConfigs.release
}

buildTypes {
    debug {
        minifyEnabled false
        debuggable true
        versionNameSuffix '-DEBUG'
    }

    release {
        minifyEnabled false
        debuggable false
        //signingConfig signingConfigs.release

        // For release build should be added custom proGuard

// minifyEnabled true // proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } }

testOptions {
    unitTests.returnDefaultValues = true
}

productFlavors {
    Modern {
        minSdkVersion 23
    }
    Legacy {
        minSdkVersion 15
    }
}

sourceSets {
    androidTest {
        resources.srcDirs += ['src/androidTest/resources']
    }
}

}

task clearData(type: Exec) { def clearDataCommand = ['adb', 'shell', 'pm', 'clear', 'bf.io.openshop'] commandLine clearDataCommand }

repositories { mavenCentral() }

dependencies { // if needed jar libraries, add them to libs folder and load them here: // compile fileTree(include: ['*.jar'], dir: 'libs') compile 'com.android.support:appcompat-v7:25.2.0' compile 'com.android.support:design:25.2.0' compile 'com.android.support:recyclerview-v7:25.2.0' compile 'com.jakewharton.timber:timber:4.1.2' compile 'com.google.android.gms:play-services-analytics:10.2.0' compile 'com.google.android.gms:play-services-gcm:10.2.0' compile 'com.google.android.gms:play-services-maps:10.2.0' compile 'com.google.code.gson:gson:2.7' compile 'mbanje.kurt:fabbutton:1.2.1' compile 'com.facebook.android:facebook-android-sdk:4.9.0' compile 'com.squareup.picasso:picasso:2.5.2' compile 'com.squareup.okhttp3:okhttp:3.2.0' compile 'com.android.volley:volley:1.0.0' compile 'com.android.support.test.espresso:espresso-idling-resource:2.2.2'

// multidex
compile 'com.android.support:multidex:1.0.0'

//// Unit testing dependencies
testCompile 'junit:junit:4.12'
testCompile 'org.mockito:mockito-all:1.10.19'
// Set this dependency if you want to use the Hamcrest matcher library
testCompile 'org.hamcrest:hamcrest-library:1.3'
testCompile 'org.powermock:powermock-module-junit4:1.6.4'
testCompile 'org.powermock:powermock-api-mockito:1.6.4'
//// Instrumentation test dependencies
androidTestCompile 'com.android.support:support-annotations:25.2.0'
androidTestCompile 'com.android.support.test:runner:0.5'
androidTestCompile 'com.android.support.test:rules:0.5'
androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.2'
androidTestCompile 'com.android.support.test.espresso:espresso-intents:2.2.2'

}

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

`