环信发送透传消息时报错，是什么原因造成的？

JNI WARNING: JNI function FindClass called with exception pending

             in Lcom/hyphenate/chat/adapter/message/EMACmdMessageBody;.nativeInit:(Ljava/lang/String;Ljava/util/Map;)V (FindClass)

Pending exception is:

java.lang.NoSuchMethodError: no method with name='next' signature='()Ljava/util/Map$Entry;' in interface Ljava/util/Iterator;

    at com.hyphenate.chat.adapter.message.EMACmdMessageBody.nativeInit(Native Method)

    at com.hyphenate.chat.adapter.message.EMACmdMessageBody.((null):-1)

    at com.hyphenate.chat.EMCmdMessageBody.((null):-1)

    at me.liujia95.instantmessaging.utils.ConversationUtils.sendGifFaceAssets(ConversationUtils.java:197)

    at me.liujia95.instantmessaging.activity.ChattingActivity$1.onItemClick(ChattingActivity.java:201)

    at android.widget.AdapterView.performItemClick(AdapterView.java:311)

    at android.widget.AbsListView.performItemClick(AbsListView.java:1182)

    at android.widget.AbsListView$PerformClick.run(AbsListView.java:3064)

    at android.os.Handler.handleCallback(Handler.java:733)

    at android.os.Handler.dispatchMessage(Handler.java:95)

    at android.os.Looper.loop(Looper.java:136)

    at android.app.ActivityThread.main(ActivityThread.java:5122)

    at java.lang.reflect.Method.invokeNative(Native Method)



03-10 19:27:14.993 22167-22167/me.liujia95.instantmessaging I/dalvikvm:     at java.lang.reflect.Method.invoke(Method.java:515)

    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)

    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:602)

    at dalvik.system.NativeStart.main(Native Method)

        EMMessage cmdMsg = EMMessage.createSendMessage(EMMessage.Type.CMD);



        Map map = new HashMap<>();

        map.put(KEY_ASSETS_NAME, assetsName);



        String action = "face";//action可以自定义

        EMCmdMessageBody cmdBody = new EMCmdMessageBody(action, map);

        cmdMsg.setReceipt(toUsername);//发送给某个人

        cmdMsg.addBody(cmdBody);

        EMClient.getInstance().chatManager().sendMessage(cmdMsg);