I have been trying to Integrate a Vuforia Unity Application in to an Android studio. i have managed to Import the Unity Build into my Application and been Able to use Its Features. But When I m Launching the the Vuforia Scene this is the Error i m Getting:

Exception in callback: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> UnityEngine.AndroidJavaException: java.lang.ClassNotFoundException: com.vuforia.VuforiaUnityPlayer.VuforiaInitializer

                                                                    java.lang.ClassNotFoundException: com.vuforia.VuforiaUnityPlayer.VuforiaInitializer

                                                                        at java.lang.Class.classForName(Native Method)

                                                                        at java.lang.Class.forName(Class.java:400)

                                                                        at java.lang.Class.forName(Class.java:326)

                                                                        at com.unity3d.player.UnityPlayer.nativeRender(Native Method)

                                                                        at com.unity3d.player.UnityPlayer.c(Unknown Source)

                                                                        at com.unity3d.player.UnityPlayer$c$1.handleMessage(Unknown Source)

                                                                        at android.os.Handler.dispatchMessage(Handler.java:101)

                                                                        at android.os.Looper.loop(Looper.java:156)

                                                                        at com.unity3d.player.UnityPlayer$c.run(Unknown Source)

                                                                     Caused by: java.lang.ClassNotFoundException: Didn't find class "com.vuforia.VuforiaUnityPlayer.VuforiaInitializer" on path: DexPathList[[zip file "/data/app/com.example.humayunt.templateui-2/base.apk"],nativeLib