build error, error: Note.body must have a default value [8]

[menglingyu]

objc[38928]: Class AMSupportURLConnectionDelegate is implemented in both /usr/lib/libauthinstall.dylib (0x1f8afbad8) and /System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/MobileDevice (0x107bb42c8). One of the two will be used. Which one is undefined. objc[38928]: Class AMSupportURLSession is implemented in both /usr/lib/libauthinstall.dylib (0x1f8afbb28) and /System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/MobileDevice (0x107bb4318). One of the two will be used. Which one is undefined. /Users/mly/freedom/SwiftUI-Notes/SwiftUI Notes/SwiftUI_Notes.xcdatamodeld/SwiftUI_Notes.xcdatamodel:Note.body: error: Note.body must have a default value [8]