Animation got stucking in GoogleMap IconView

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` self.userCreatedMarker.groundAnchor = CGPoint(x: 1.0, y: 1.0)

let vwAnno = SVPulsingAnnotationView(annotation: MKMapView().userLocation, reuseIdentifier: "str")
vwAnno.center = view_pin.center
view_pin.addSubview(vwAnno)`

Here is my code.

• Pulsing effect like ring look like little bit stuck.
  Please help to solve these issue.
  Thanks in advance