libc++abi.dylib crash

cocos2d-x C++
#1

From Crashlytics i am getting this kind of crashes

libc++abi.dylib

its only happening in ios. There is no problem for android

i could not figure out what casing this crashes

From Crashlytics i got this for some of them

crash_info_entry_0
CoreUI: deallocating _CUIInternalLinkRendition 60760 /System/Library/CoreServices/CoreGlyphs.bundle/Assets.car

i don’t know whats really casing this

#2

-[NSISEngine tryToOptimizeReturningMutuallyExclusiveConstraints]

If you are facing this crash and you are using AdMob, this is caused by AdMob UIWebView, good news is there are temporary fix for this problem.

https://groups.google.com/forum/#!category-topic/google-admob-ads-sdk/ios/I4EEWrPPbSc