アンドロイドアプリケーションのコンパイル中にエラーが発生しました - タスクの実行に失敗しました：app：transformClassesWithDexForDebug

Question

Googleマップアクティビティを追加する前に、アプリケーションが正しくコンパイルされていました。それから私は

android { 
    compileSdkVersion 24 
    buildToolsVersion "23.0.3" 
    useLibrary 'org.apache.http.legacy' 

    defaultConfig { 
     applicationId "zupportdesk.desk.zupport.chatsystem" 
     minSdkVersion 15 
     targetSdkVersion 24 
     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-v7:24.2.0' 
    compile 'com.android.support:recyclerview-v7:24.2.0' 
    compile 'com.android.support:design:24.2.0' 
    compile 'com.android.support:cardview-v7:24.2.0' 
    compile 'org.java-websocket:Java-WebSocket:1.3.0' 
    compile 'com.google.android.gms:play-services:9.4.0' 
    compile 'br.com.liveo:navigationdrawer-material:2.5.1' 



    compile files('libs/gson-2.2.2.jar') 
    compile files('libs/signalr-client-sdk-android.jar') 
    compile files('libs/signalr-client-sdk.jar') 

} 

は、誰かが私はこの問題を解決するために助けることができる、このエラー

FAILURE: Build failed with an exception. 

* What went wrong: 
Execution failed for task ':app:transformClassesWithDexForDebug'. 
> com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command '/usr/lib/jvm/java-8-openjdk-amd64/bin/java'' finished with non-zero exit value 2 

* Try: 
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. 






Error:The number of method references in a .dex file cannot exceed 64K. 
Learn how to resolve this issue at https://developer.android.com/tools/building/multidex.html 
:app:transformClassesWithDexForDebug FAILED 
Error:Execution failed for task ':app:transformClassesWithDexForDebug'. 
> com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command '/usr/lib/jvm/java-8-openjdk-amd64/bin/java'' finished with non-zero exit value 2 

build.gradleを取得します。 TNX