项目使用 Hikari遇到了
Undefined symbols for architecture arm64:
"___isOSVersionAtLeast", referenced from:
-[JPushNotificationContent copyWithZone:] in jpush-ios-3.1.1.a(JPUSHService.o)
-[JPushNotificationContent initWithCoder:] in jpush-ios-3.1.1.a(JPUSHService.o)
-[JPushNotificationContent encodeWithCoder:] in jpush-ios-3.1.1.a(JPUSHService.o)
-[JPushNotificationSound init] in jpush-ios-3.1.1.a(JPUSHService.o)
-[JPushNotificationSound copyWithZone:] in jpush-ios-3.1.1.a(JPUSHService.o)
-[JPushNotificationSound initWithCoder:] in jpush-ios-3.1.1.a(JPUSHService.o)
-[JPushNotificationSound encodeWithCoder:] in jpush-ios-3.1.1.a(JPUSHService.o)
...
ld: symbol(s) not found for architecture arm64
clang-7: error: linker command failed with exit code 1 (use -v to see invocation)
这样的错误提示…请问怎么解决呢