arrays - Getting error after initialising json api in swift -

i got working far. when building project , running function parses api content , crashes. here code:

// //  gamestableviewcontroller.swift //  football life // //  created david seyboth on 18/01/16. //  copyright © 2016 david seyboth. rights reserved. //  import uikit  class gamestableviewcontroller: uitableviewcontroller {      // mark: properties     var gameplan = [games]()       override func viewdidload() {         super.viewdidload()          //load nfl games         loadnflgames { (result) -> () in             self.gameplan = result             dispatch_async(dispatch_get_main_queue(),{                 self.tableview.reloaddata()             })         }     }        func loadnflgames(completionclosure: (result : [games]) ->()){         let queue: dispatch_queue_t = dispatch_get_global_queue(dispatch_queue_priority_default, 0)         dispatch_async(queue, {             let url = "http://www.fantasyfootballnerd.com/service/schedule/json/test/"             print(url)             if let data = nsdata(contentsofurl: nsurl(string: url)!){                 if let jsonobject = try? nsjsonserialization.jsonobjectwithdata(data, options: nsjsonreadingoptions.mutablecontainers) as! nsmutabledictionary{                     print(jsonobject)                       let hometeam = jsonobject["hometeam"] as! string                     let awayteam = jsonobject["awayteam"] as! string                     let gamedate = jsonobject["gamedate"] as! string                     let gametimeet = jsonobject["gametimeet"] as! string                     let tvstation = jsonobject["tvstation"] as! string                      let api_guest = awayteam                     let api_home = hometeam                     let api_tvhost = tvstation                     let api_time = gamedate + ", " + gametimeet + " et" // convert gamedate day e.g. sun                     let api_stadion = "n/a"                      // prepare data array                     let gamedata = games(participants: api_guest+" @ "+api_home, photoguest: uiimage(named: api_guest), photohome: uiimage(named: api_home), time: api_time, stadium: api_stadion, channel: api_tvhost)!                      self.gameplan.append(gamedata)                      completionclosure(result: self.gameplan)                 }             }          })     }        override func didreceivememorywarning() {         super.didreceivememorywarning()         // dispose of resources can recreated.     }      // mark: - table view data source      override func numberofsectionsintableview(tableview: uitableview) -> int {         // #warning incomplete implementation, return number of sections         return 1     }      override func tableview(tableview: uitableview, numberofrowsinsection section: int) -> int {         // #warning incomplete implementation, return number of rows         return gameplan.count     }      override func tableview(tableview: uitableview, cellforrowatindexpath indexpath: nsindexpath) -> uitableviewcell {         let cellidentifier = "gamesprototypecell"         let cell = tableview.dequeuereusablecellwithidentifier(cellidentifier, forindexpath: indexpath) as! gamestableviewcell          // fetches appropriate meal data source layout.         let game = gameplan[indexpath.row]          cell.participants_label.text = game.participants         cell.photoguest_image.image = game.photoguest         cell.photohome_image.image = game.photohome         cell.time_label.text = game.time         cell.stadium_label.text = game.stadium         cell.channel_label.text = game.channel           return cell  } } 

the crash @ line: let hometeam = jsonobject["hometeam"] as! string message:

fatal error: unexpectedly found nil while unwrapping optional value

you missing json format. values looking in array "schedule"

so code

        if let jsonobject = try? nsjsonserialization.jsonobjectwithdata(data, options: nsjsonreadingoptions.mutablecontainers) as! nsmutabledictionary{  //this array of games             let items = jsonobject["schedule"] as! nsmutablearray             print(items) //loop in items , add values array              item in items {                 let hometeam = item["hometeam"] as! string                 let awayteam = item["awayteam"] as! string                 let gamedate = item["gamedate"] as! string                 let gametimeet = item["gametimeet"] as! string                 let tvstation = item["tvstation"] as! string                 let api_guest = awayteam                 let api_home = hometeam                 let api_tvhost = tvstation                 let api_time = gamedate + ", " + gametimeet + " et" // convert gamedate day e.g. sun                 let api_stadion = "n/a"                  // prepare data array                 let gamedata = games(participants: api_guest+" @ "+api_home, photoguest: uiimage(named: api_guest), photohome: uiimage(named: api_home), time: api_time, stadium: api_stadion, channel: api_tvhost)!                  self.gameplan.append(gamedata)             }         }