我的代码中出现了Mach-O错误。
Undefined symbols for architecture i386:
"_OBJC_CLASS_$_UIMutableUserNotificationAction", referenced from:
objc-class-ref in GameThrive(GameThrive.o)
"_OBJC_CLASS_$_UIMutableUserNotificationCategory", referenced from:
objc-class-ref in GameThrive(GameThrive.o)
"_OBJC_CLASS_$_UIUserNotificationSettings", referenced from:
objc-class-ref in GameThrive(GameThrive.o)
ld: symbol(s) not found for architecture i386
可能的原因是什么？