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NSOSStatusErrorDomain Code=-12550

Error Domain=AVFoundationErrorDomain Code=-11800 "The operation could not be completed" UserInfo={NSLocalizedFailureReason=An unknown error occurred (-12550), NSLocalizedDescription=The operation could not be completed, NSUnderlyingError=0x280ef1e60 {Error Domain=NSOSStatusErrorDomain Code=-12550 "(null)"}}What does code=-12550 mean? Where can I get those errors' description documents?With great appreciate for your help.
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Mac Catalyst automatically scale elements down to 77%

in Human Interface Guidelines hhttps://developer.apple.com/design/human-interface-guidelines/ios/overview/mac-catalyst/it says: To ensure that your text and interface elements are consistent with the macOS display environment, iOS views automatically scale down to 77%.Now, all elements in my app are too too too small......How can i change this value?Thanks.
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