invalidate the layer to update the data instead of raising a non-related signal
invalidate the layer to update the data instead of raising a non-related signal
datapolitan/cartodb20,jmwenda/nationmaps,datapolitan/cartodb20,jmwenda/nationmaps,datapolitan/cartodb20,jmwenda/nationmaps,datapolitan/cartodb20,jmwenda/nationmaps