ios - Issue with setting image UILabel swift - found nil while unwrapping optional -

code looks this:

    lazy var placelabel: uilabel = {         let label = uilabel()         label.backgroundcolor = uicolor(patternimage: uiimage(named: "placelabel")!)         label.translatesautoresizingmaskintoconstraints = false          return label     }() 

i'm not sure why when input label.backgroundcolor() program can't run , breaks on line.

"fatal error: unexpectedly found nil while unwrapping optional value"

when remove , continue setup seems run fine. i've seen other comments on issues saying view isn't setup when command called i'm pretty doing exact same thing buttons , whatnot , it's working fine.

any idea why happening?

thanks

in line, uicolor(patternimage: uiimage(named: "placelabel")!), forcing unwrapping of uiimage object using !. if no image named "placelabel" exists in project, app crash, trying unwrap nil.