Undefined symbols for architecture arm64:
"_OBJC_CLASS_$_EKEvent", referenced from:
objc-class-ref in libGoogleAdMobAds.a(GADOpener.o)
"_OBJC_CLASS_$_EKEventEditViewController", referenced from:
objc-class-ref in libGoogleAdMobAds.a(GADOpener.o)
"_OBJC_CLASS_$_CTTelephonyNetworkInfo", referenced from:
objc-class-ref in libGoogleAdMobAds.a(GADDevice.o)
"_CTRadioAccessTechnologyDidChangeNotification", referenced from:
-[GADDevice enableRadioAccessTechnologyChecking] in libGoogleAdMobAds.a(GADDevice.o)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)