The requests for ACA WMS data for Jamaica (jamaica_geomorphic = get_aca_layer(['geomorphic_data_verbose'], jamaica_bbox) and jamaica_benthic = get_aca_layer(['benthic_data_verbose'], jamaica_bbox) in lines 453 and 457) time and and fail ungracefully. Perhaps a Geoserver limitation? Maybe recode the tutorial to use a smaller, or less complex area for the time being?