objective c - Exception thrown on device, but not in simulator -

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i'm getting strange behavior when run app. in simulator, app runs fine. on device, exception thrown. i'm new ios, i'm lost on one. have breakpoints set exceptions , output prints lldb.

also, i'm not sure if relevant, when first occurred yesterday, device crashed , deleted apps. had restore morning. tried restarting both mac , device.

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i didn't realize there "continue" button in console. when clicked, printed error.

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