iOS Swift : Thread 1: EXC_BAD_INSTRUCTION (code=1, subcode=0x0)

In iOS utilizing WIPER Structure and I’m making an attempt to supply an Look to TextFormField named updateMemoField.

Already there was to TextFormFields as under:

@IBOutlet weak var brandValue: BorderedTextField?
@IBOutlet weak var allocationValue: BorderedTextField?

then calling setViewAppearance(look: show)

override func awakeFromNib() {
    tremendous.awakeFromNib()
    do {
        appearanceProvider = attempt DependencyContainer.shared.resolve() as BMLineItemAppearanceProvider
    } catch {
        log.error("Couldn't load BMLineItemAppearanceProvider class")
    }
    look = appearanceProvider?.bmLineItemAppearance
    if let show = look {
        setViewAppearance(look: show)
    }
}

you’ll be able to verify methodology under:

personal func setViewAppearance(look: BMLineItemAppearance) {
    setAllFields(look: look)
    ...
}

setAllFields methodology is as under:

personal func setAllFields(look: BMLineItemAppearance) {
    let fields = [brandValue: localizedKey(key: "select"),
             allocationValue: localizedKey(key: "select")]
    for merchandise in fields {
        merchandise.key?.configureAppearance(look.textAppearance, fieldAppearanceType: .formText)
        merchandise.key?.borderedEdges = BorderedEdge.all
        merchandise.key?.placeholder = merchandise.worth
        merchandise.key?.tintColor = .clear
        merchandise.key?.delegate = self
        merchandise.key?.dropdownButton(completionHandler: {
            self.onClickDropDownFields(area: merchandise.key!)
        })
    }
}

That is working wonderful. However, Now I want so as to add yet one more TextFormField (BorderedTextField) in my UI so merely I declared variable as under:

@IBOutlet weak var updateMemoField: BorderedTextField?

and Tried to supply look to it as under by creating a technique:

personal func setUpdateMemoFieldsAppearance(look: BMLineItemAppearance) {
    guard let updateMemoField = updateMemoField else {
        print("updateMemoField is nil, skipping configuration.")
        return
    }
    
    updateMemoField.tintColor = .blue
    updateMemoField.configureAppearance(look.textAppearance, fieldAppearanceType: .formText)
    updateMemoField.returnKeyType = .default
    updateMemoField.autocorrectionType = .no
    updateMemoField.borderedEdges = BorderedEdge.all
    updateMemoField.delegate = self
}

Calling this methodology inside setAllFields as under:

personal func setAllFields(look: BMLineItemAppearance) {
    let fields = [brandValue: localizedKey(key: "select"),
             allocationValue: localizedKey(key: "select")]
    for merchandise in fields {
        merchandise.key?.configureAppearance(look.textAppearance, fieldAppearanceType: .formText)
        merchandise.key?.borderedEdges = BorderedEdge.all
        merchandise.key?.placeholder = merchandise.worth
        merchandise.key?.tintColor = .clear
        merchandise.key?.delegate = self
        merchandise.key?.dropdownButton(completionHandler: {
            self.onClickDropDownFields(area: merchandise.key!)
        })
    }
    setUpdateMemoFieldsAppearance(look:look)
}

and runtime am getting error as :

Thread 1: EXC_BAD_INSTRUCTION (code=1, subcode=0x0)

What may be the problem?