I trying to modify an app and I have an error.

So, in my app I have six dictionaries and I have a problem with icon. fatal error: unexpectedly found nil while unwrapping an Optional value (lldb)

if main0 != nil { Detail0CoverImage.image = main0!.icon0 Detail0CoverImage.backgroundColor = main0!.backgroundColor0 Detail0Title.text = main0!.title0 Detail0Description.text = main0!.description0 at debug area I can see that description0 - is ok but icon0 with error (0x000 etc).

I checked my code twise but I can not find an error

struct Main0{ var title0: String? var description0: String? var icon0: UIImage? var backgroundColor0: UIColor = UIColor.clearColor() var needTo0: [String] = []

init(index: Int) {

/// ЧАСТЬ 0

let dataLibrary0 = DataLibrary().library0
let mainDictionary0 = dataLibrary0[index]
title0 = mainDictionary0["title"] as String!
description0 = mainDictionary0["description"] as String!

let iconName0 = mainDictionary0["icon"] as String!
icon0 = UIImage(named: iconName0)

needTo0 += mainDictionary0["needTo"] as [String]

let colorsDictionary0 = mainDictionary0["backgroundColor"] as [String: CGFloat]
backgroundColor0 = rgbColorFromDictionary0(colorsDictionary0)

}

Library looks like this:

struct DataLibrary { let library0 = [ [ "title": "Название 1 либ 1", "description": "Описание 1 либ 1", "icon": "ss_01.pdf", "backgroundColor": ["red": 255, "green": 204, "blue": 51, "alpha": 1.0], "needTo": ["Действие 1 либ 1"] ], etc