cocos2d-x SDK crash report as below
	 
	cocos2d-x v3.5
	 
	Thread : Crashed: com.apple.main-thread
	0  App iOS                   0x00042088 AppWarp::getJSONString(char const*, unsigned char*, int) (utilities.cpp:60)
	1  App iOS                   0x00019817 cJSON_Delete (cJSON.c:90)
	2  App iOS                   0x0004a45b AppWarp::buildRoomData(AppWarp::room_struct&, unsigned char*, int) (string:3191)
	3  App iOS                   0x0004db79 AppWarp::Client::handleNotify(char*, int) (appwarp_extended.cpp:323)
	4  App iOS                   0x0006f70d AppWarp::Client::socketNewMsgCallback(unsigned char*, int) (appwarp.cpp:510)
	5  App iOS                   0x0002df63 AppWarp::Utility::Socket::checkMessages() (socket.cpp:101)
	6  App iOS                   0x0006f2f3 AppWarp::Client::update(float) (appwarp.cpp:368)
	7  App iOS                   0x001dd8a5 std::__1::function<void (float)>::operator()(float) const + 1503612
	8  App iOS                   0x001dd05b cocos2d::Scheduler::update(float) + 1501490
	9  App iOS                   0x001e4495 cocos2d::Director::drawScene() + 1531244
	10 App iOS                   0x001e59d7 cocos2d::DisplayLinkDirector::mainLoop() + 1536686
	11 QuartzCore                     0x2faaa803 CA::Display::DisplayLinkItem::dispatch() + 98
	12 QuartzCore                     0x2faaa66b CA::Display::DisplayLink::dispatch_items(unsigned long long, unsigned long long, unsigned long long) + 366
	13 IOMobileFramebuffer            0x3439282b IOMobileFramebufferVsyncNotifyFunc + 90
	14 IOKit                          0x2da9c4e1 IODispatchCalloutFromCFMessage + 256
	15 CoreFoundation                 0x2cb2c0a5 __CFMachPortPerform + 132
	16 CoreFoundation                 0x2cb3c573 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 34
	17 CoreFoundation                 0x2cb3c50f __CFRunLoopDoSource1 + 346
	18 CoreFoundation                 0x2cb3ab11 __CFRunLoopRun + 1608
	19 CoreFoundation                 0x2ca883c1 CFRunLoopRunSpecific + 476
	20 CoreFoundation                 0x2ca881d3 CFRunLoopRunInMode + 106
	21 GraphicsServices               0x33e860a9 GSEventRunModal + 136
	22 UIKit                          0x300967b1 UIApplicationMain + 1440
	23 App iOS                   0x0006832b main (main.m:6)
	24 libdyld.dylib                  0x3a8b0aaf start + 2