Android Runtime error in logcat CCNode error

Hello, I made a test run of adding my csb scenes into android studio. My environment is

Cocos2dx-3.15
Android Studio 2.3.1

So after adding my test scene i added the rest of my code and ran the build, i use my lg g4 as a physical emulator and when i run the app it does not even open and crashes instantly. I checked logcat and this is what it tells me is the problem.

04-28 18:19:41.143 14161-14307/org.cocos2dx.cpp D/cocos2d-x debug info: Assert failed: Argument must be non-nil.

04-28 18:19:41.143 14161-14307/org.cocos2dx.cpp E/cocos2d-x assert: C:/Users/Genesis/Desktop/ManaDiceX/cocos2d/cocos/./2d/CCNode.cpp function:addChild line:1003.

04-28 18:19:41.144 14161-14307/org.cocos2dx.cpp A/libc: Fatal signal 11 (SIGSEGV), code 1, fault addr 0x0 in tid 14307 (GLThread 23985).

if it helps, here is my cpp file

#include “MMScene.h”
#include “…/cocos2d/cocos/2d/CCNode.h”

Scene* MMScene::createScene()
{

// ‘scene’ is an autorelease object
auto scene = Scene::create();

// ‘layer’ is an autorelease object
auto layer = MMScene::create();

// add layer as a child to scene
scene->addChild(layer);

// return the scene
return scene;
}

// on “init” you need to initialize your instance
bool MMScene::init() {
//////////////////////////////
// 1. super init first
if (!Scene::init()) {
auto rootNode = CSLoader::createNode(“MMScene.csb”);
this->addChild(rootNode);

    auto MMAbilitiesButton = rootNode->getChildByName<ui::Button *>("btnBack"); //find button
    MMAbilitiesButton->retain();

    MMAbilitiesButton->addTouchEventListener(

            [&](Ref *ref, ui::Widget::TouchEventType touchEventType) {
                if (touchEventType != ui::Widget::TouchEventType::ENDED) return;
                //button clicked

            });


    return false;
}

}