IssueTracker

App Crash while using GMSPlace Picker in ios 9.
GMSPlacePicker is getting crash when user does not select any place from picker view and press Back button.
 Here is my code:

- (void)findNearByPlace :(CLLocationCoordinate2D)center {
   
    CLLocationCoordinate2D northEast = CLLocationCoordinate2DMake(center.latitude + 0.001,
                                                                  center.longitude + 0.001);
    CLLocationCoordinate2D southWest = CLLocationCoordinate2DMake(center.latitude - 0.001,
                                                                  center.longitude - 0.001);
    GMSCoordinateBounds *viewport = [[GMSCoordinateBounds alloc] initWithCoordinate:northEast
                                                                         coordinate:southWest];
    GMSPlacePickerConfig *config = [[GMSPlacePickerConfig alloc] initWithViewport:viewport];
    self.placePicker = [[GMSPlacePicker alloc] initWithConfig:config];
    [self.placePicker pickPlaceWithCallback:^(GMSPlace *place, NSError *error) {
        if (error != nil) {
            NSLog(@"Pick Place error %@", [error localizedDescription]);
            return;
        }
        if (place != nil) {
            NSLog(@"Place name:%@",place.formattedAddress);
            placeName = place.name;
            placeAddress = place.formattedAddress;
            //hide previous marker
            self.mapMarker.map = nil;
            self.locaitonTitle = place.name;
            self.locationAddress = place.formattedAddress;
            self.mapMarker = [GMSMarker markerWithPosition:place.coordinate];
            self.mapMarker.icon = [UIImage imageNamed:@"ic_ellipse_black.png"];
            mapLattitude = place.coordinate.latitude;
            mapLongitude = place.coordinate.longitude;
            self.mapMarker.draggable = YES;
            markerTag = @"2";
            markerDefault = @"default";
            self.mapMarker.userData = @{};
            self.mapMarker.map = self.mapView_;
            [self showLocationPopUp:placeName address:placeAddress withCoord:place.coordinate];
            //[self showLocationFoundView];
        } else {
           
            [self addOwnLocation : longPressCoord];
            NSLog(@"No Place is selected yet");
        }
    }];
}

Any help?