Can't find method onClick with 1 parameters in org.vaadin.addon.leaflet.sha

Hello,

Last week I've upgraded from v-leaflet 1.0.0-b2 to 1.0.0-b7 in order to use the new FlyTo functionality. However since that upgrade the marker on my map is giving the following exception when clicked:

Can't find method onClick with 1 parameters in org.vaadin.addon.leaflet.shared.ClickServerRpc

Here's the code:

            LMarker marker = new LMarker(lat, long);
                   
            marker.addClickListener(new LeafletClickListener() {
                @Override
                public void onClick(LeafletClickEvent event) {
                    Notification.show(cityName);
                }
            });
            worldMap.addComponent(marker);       

This code used to work fine in 1.0.0-b2.
Thanks in advance for any help!

Rob