Error:Execution failed for task ':app:transformClassesWithJarMergingForDebug'.
> com.android.build.api.transform.TransformException: java.util.zip.ZipException: duplicate entry: org/apache/commons/io/CopyUtils.class

It occurs this error.

The app builds success but when I get build apk, android studio show this message

This is my gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion '25'
    defaultConfig {
        applicationId "com.example.thewell_dev.fourscompany"
        minSdkVersion 19
        targetSdkVersion 24
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        multiDexEnabled true
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:23.2.0'
    compile 'com.android.support.constraint:constraint-layout:1.0.2'
    testCompile 'junit:junit:4.12'
    compile 'com.mobsandgeeks:android-saripaar:2.0.3'
    compile 'com.koushikdutta.ion:ion:2.1.9'
    compile 'gun0912.ted:tedpermission:1.0.2'
    compile 'com.android.support:design:22.+'
    compile 'com.estimote:sdk:0.13.0'
    compile 'jp.wasabeef:glide-transformations:2.0.0'
    compile 'com.afollestad:easyvideoplayer:0.3.0'
    compile 'com.github.jrvansuita:PickImage:v2.0.0'
    compile 'com.amazonaws:aws-android-sdk-s3:2.+'
    compile 'com.mindorks:placeholderview:0.6.0'
    compile 'com.tsengvn:Typekit:1.0.0'
    compile 'com.github.esafirm:RxDownloader:1.0.1'
    compile 'com.mlsdev.rximagepicker:library:1.1.2'
    compile 'io.reactivex:rxjava:1.0.14'
    compile 'com.kbeanie:image-chooser-library:[email protected]'
    compile 'com.kbeanie:image-chooser-library:1.5.8'
    compile 'io.github.jeancsanchez.photoviewslider:photoviewslider:1.2.0'
    compile 'com.nononsenseapps:filepicker:3.1.0'
    compile 'com.gjiazhe:scrollparallaximageview:1.0'
    compile 'com.droidninja:filepicker:1.0.8'
    compile 'com.android.support:multidex:1.0.0'

}

I think external libraries have Commons-io-1.3.2.jar Commons-io-2.4.jar and both have CopyUtils.class

Anyway, It can't build apk and show that message.

Please anyone help me please

There is more than one dependency you have integrated which uses Apache Commons. just exclude them using following code in gradle.

compile('YOUR_DEPENDENCY') {
    exclude module: 'commons-io'
}

more