“Couldn't send a valid signature” error when using CloudKit without iCloud account
问题 I have submitted an iOS app that uses CloudKit to Apple. It's being rejected because it requires user to sign into iCloud for access. Apple's reasoning is that even without iCloud sign-in, the public database is still readable. So that part of the app should function. I am trying to modify the app but I continue to get this error when I am not signed in. <CKError 0x8141a360: "Internal Error" (1/4000); "Couldn't send a valid signature"> I have searched the web and the solution is always just