swift - Swift3 iOS - How to make UITapGestureRecognizer trigger function -

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i trying add uitapgesture uibutton trigger function when tapped. using swift 3 , getting error:

terminating app due uncaught exception 'nsinvalidargumentexception', reason: '-[swiftrunner.viewcontroller tapblurbutton]: unrecognized selector sent instance 0x149e07610'

this have:

// swift 3 import uikit class viewcontroller {     @iboutlet weak var qsblurbutton: uibutton!            override func viewdidload() {       super.viewdidload()        let tapgesture = uitapgesturerecognizer(target: self, action: selector(("tapblurbutton")))       qsblurbutton.addgesturerecognizer(tapgesture)    }     func tapblurbutton(sender: uitapgesturerecognizer) {       print("please help!")    } }

from code using swift 3.0 change selector syntax 

let tapgesture = uitapgesturerecognizer(target: self, action: #selector(self.tapblurbutton(_:)))

and function this

func tapblurbutton(_ sender: uitapgesturerecognizer) {     print("please help!") }

edit:

not idea using button tap gesture, instead of use inbuilt method addtarget button no need create tap gesture this

qsblurbutton.addtarget(self, action: #selector(self.tapblurbutton(_:)), forcontrolevents: .touchupinside)  func tapblurbutton(_ sender: uibutton) {     print("please help!") }

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