When updating the application, I received a similar error, but with mapType:
' ' kGMSTypeTerrain ' :
@IBOutlet weak var googleMapView: GMSMapView!
googleMapView.mapType = kGMSTypeTerrain
, . , Apache GoogleMaps IOS, cocoa pod ( pod), . , , , , mapStyle. , Swift 3,
googleMapView.mapType = kGMSTypeTerrain
googleMapView.mapType = .terrain
.