I compiled my app with Xcode 13 beta and am getting a bunch of runtime warnings like this. I've also noticed someone else on Twitter experiencing the same thing. Any idea what's causing this? Something with my plist file formatting? I don't use Core Data (used to long ago but don't think I have any relics of that in my project anywhere) which was my first thought when seeing NSKeyedUnarchiver. 2021-06-17 00:54:02.295892+0300 RedactedAppName[3659:1216650] [general] *** -[NSKeyedUnarchiver _warnAboutPlistType:missingInAllowedClasses:] allowed unarchiving safe plist type ''NSString' (0x1ef8aebe0) [/System/Library/Frameworks/Foundation.framework]', even though it was not explicitly included in the client allowed classes set: '{(   "'NSDate' (0x1ef8a3e30) [/System/Library/Frameworks/CoreFoundation.framework]",   "'NSDictionary' (0x1ef8a3f98) [/System/Library/Frameworks/CoreFoundation.framework]" )}'. This will be disallowed in the future. 2021-06-17 00:54:02.296016+0300 RedactedAppName[3659:1216650] [general] *** -[NSKeyedUnarchiver _warnAboutPlistType:missingInAllowedClasses:] allowed unarchiving safe plist type ''NSString' (0x1ef8aebe0) [/System/Library/Frameworks/Foundation.framework]', even though it was not explicitly included in the client allowed classes set: '{(   "'NSDate' (0x1ef8a3e30) [/System/Library/Frameworks/CoreFoundation.framework]",   "'NSDictionary' (0x1ef8a3f98) [/System/Library/Frameworks/CoreFoundation.framework]" )}'. This will be disallowed in the future. 2021-06-17 00:54:02.448722+0300 RedactedAppName[3659:1216462] [general] *** -[NSKeyedUnarchiver _warnAboutPlistType:missingInAllowedClasses:] allowed unarchiving safe plist type ''NSString' (0x1ef8aebe0) [/System/Library/Frameworks/Foundation.framework]', even though it was not explicitly included in the client allowed classes set: '{(   "'NSDate' (0x1ef8a3e30) [/System/Library/Frameworks/CoreFoundation.framework]",   "'NSDictionary' (0x1ef8a3f98) [/System/Library/Frameworks/CoreFoundation.framework]" )}'. This will be disallowed in the future.