debugging - Why does this keep returning error "Object not found" from Heroku/Parse in swift? -

i trying delete row username = usernameselected heroku/parse server. username selected not nil , exist on server. nothing seem wrong @ all, "object not found" instead of deleting whole row.

let query = pfquery(classname: "requests")  query.wherekey("username", equalto: usernameselected) query.limit = 1 query.findobjectsinbackgroundwithblock({ (objects, error) in     if error != nil {     }else {         if let objects = objects {             obj in objects {                 obj.deleteinbackgroundwithblock({ (success, error) in                     activityindicator.stopanimating()                      uiapplication.sharedapplication().endignoringinteractionevents()                      if error != nil {                        self.alertdisplay("error", message: error?.userinfo["error"] as! string)                     }else {                         self.alertdisplay("", message: "styles submitted..! please wait next style")                     }                 })             }         }     } }) 

1. make sure have read , write permissions class

2. the deleting failing because acl rows created in class have read permission. allow both read , write permissions, in appdelegate under method "didfinishlaunchingwithoptions" see lines

let defaultacl = pfacl();

// if objects private default, remove line. defaultacl.getpublicreadaccess = true

add line --- defaultacl.getpublicwriteaccess = true

this create rows write permissions in future can delete object client side.