Is not a valid member of model?

So I'm making a script and in the outbox it says

16:24:35.412 - Card1 is not a valid member of Model
16:24:35.412 - Script 'Workspace.Screening.Jobs.Job4.Script', Line 2
16:24:35.412 - Stack End

Although here is a picture of the lighting before the script is ran

Picture: http://prntscr.com/bod81x

And here is the script

script.Parent.ClickDetector.MouseClick:connect(function()
    game.Lighting.Cards.Card1 = game.Workspace.JobTray.Jobs
    game.Workspace.JobTray.Jobs.Card1.Anchored = false
end)