uncaught exception 'NSUnknownKeyException', reason: '[<UIViewController 0x7fad91c12b10> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key

//Go to this link :)
//https://stackoverflow.com/questions/38308329/swift-setvalueforundefinedkey-this-class-is-not-key-value-coding-compliant-f

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Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<UIViewController 0x10d60aa10> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key uisearchBar Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<UIViewController 0x10d60aa10> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key asearchBar Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<UIView 0x7fc2ee607370> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key lb.' Exception NSException * "[<UIViewController 0x7fe397d077d0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key tempVC1." 0x00006000007da6a0 swift UITextField setValue for UndefinedKey this class is not key value coding-compliant for the key setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key descriptionLabel.' terminating with uncaught exception of type NSException Thread 1: "[<UIViewController 0x104938230> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key Thread 1: [<UIViewController 0x106c1e200> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key cancelButton. Thread 1: "[<UIViewController 0x106c1e200> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key cancelButton." xcode setValue:for this class is not a key value *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<UIViewController 0x100a09040> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key Thread 1: [<Khadmix.ViewController 0x7fe8937055c0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key loginButton. <FIRCrashlytics setValue:forUndefinedKey: this class is not key value coding-compliant for the key view_controller." Thread 1: "[<FIRCrashlytics 0x282cae780> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key view_controller." Thread 1: "[<Tipsy.InputViewController 0x14a907da0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key splitValue." Thread 1: "[<Destini iOS 13.ViewController 0x103207b60> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key choice1Button." Exception NSException * "[<UIViewController 0x7fc5bc4092f0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key speedSlider." 0x00006000028893e0 Thread 1: "[<iRuler.ViewController 0x10cd06180> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key arView." Thread 1: [<EggTimer.ViewController 0x7f9788e0c730> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key hardnessSelected. Thread 1: "[<EggTimer.ViewController 0x7f9112806630> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key hardnessSelected." Exception NSException * "[<UIView 0x7f8a43e674d0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key dataSource." 0x00006000024a0990 reason __NSCFString * "[<VRC_Team.EventInformationCell 0x7f86f914f000> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key view9." 0x000060000218d720 <IOS_Swift_AudioRecorder01.ViewController 0x7fa4185050a0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key recordAct." Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<UIView 0x7f811256a730> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key Set1View. Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<UIView 0x7f90eac0ccd0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key thread 1: [<Apple_Pie.ViewController 0x7feec4d07cc0> setValue:forUnderfinedKey:]: this class is not key value coding-compliant for the key Tree. thread 1: "[<Apple_Pie.ViewController 0x7feec4d07cc0> setValue:forUnderfinedKey:]: this class is not key value coding-compliant for the key Tree." <UIViewController 0x106d17010> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key salesBklgCustDateSelectorBtnOutlet." Exception NSException * "[<UIViewController 0x7ff4b4004900> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key ClpButton Thread 1: Exception: "[<Lecture_1.ViewController 0x7fbee7205a50> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key myButton." '[<NSObject 0x2823082f0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key _view.' Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<dhatu.prodDetail uiCollectionViewCell 0x7f93f301afb0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key prodDesc.' Thread 1: Exception: "[<UIViewController 0x7f8fbd7103d0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key startBtn." Thread 1: Exception: "[<EmailPasswordLogin.SignUpViewController 0x7fe483425b50> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key picker." Thread 1: Exception: "[<UIViewController 0x106b09420> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key TimesCollection." Thread 1: Exception: "[<RestoBot.ViewController 0x7f9cd4c0be80> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key Thread 1: Exception: "[<RestoBot.ViewController 0x7f9cd4c0be80> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key buttonServOne." Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<Photo_Viewer.MyCollectionViewCell 0x7fe2d5505240> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key image. Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<Photo_Viewer.ViewController 0x7ff25fe08950> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key dataSource.' Thread 1: Exception: "[<Xylophone.ViewController 0x7ff417c08490> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key button." Exception NSException * "[<UIViewController 0x7ff5d1704370> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key table." 0x00006000024d0690 Error: CastError: Cast to ObjectId failed for value "all" at path "_id" for model "Article" SQLSTATE[HY000]: General error: 1822 Failed to add the foreign key constraint. Missing index for constraint Thread 1: Exception: "[<multiple_view_controllers.ViewController 0x7fae6a6090d0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key go_to_scene." Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<UIViewController 0x115b401b0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key itemTabBar.
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