：transformClassesWithDexForDebugが失敗しました

Transformclasseswithdexfordebug Failed

エラーメッセージ：

:transformClassesWithDexForDebug FAILED FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':transformClassesWithDexForDebug'. > com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: java.lang.UnsupportedOperationException

環境：android studio2.2

//build.gradle set up the project defaultConfig { applicationId 'com.application.packageName' minSdkVersion 14 targetSdkVersion 21 multiDexEnabled true // set to true (emphasis) } dexOptions { preDexLibraries false jumboMode true javaMaxHeapSize '4g' / / increase the compilation memory }