Undefined symbols for architecture arm64:
"vtable for std::out_of_range", referenced from:
FNFCursor::readBE16(unsigned long long) in FBAudienceNetwork(FNFCursor.o)
FNFCursor::readBE32(unsigned long long) in FBAudienceNetwork(FNFCursor.o)
FNFCursor::readBE64(unsigned long long) in FBAudienceNetwork(FNFCursor.o)
FNFCursor::read8(unsigned long long) in FBAudienceNetwork(FNFCursor.o)
NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.