We will be decommissioning Commerce Bug's graph rendering service at graph.pulsestorm.net. It's last day of operation will be February 28th, 2022. This server rendered the directed graph files Commerce Bug produced of a Magento page layout. If you still require this rendering you have a number of options
1. The latest versions of Commerce Bug include a View as Tree option which renders the layout information as an interactive javascript tree
2. The Show Graph Source option still displays the full "dot notation" source of a layout tree, and can be rendered by programs like Graphviz or by in browser viewers like GraphvizOnline.
If this decommissioning will cause (or has caused) an unsolvable issue for you please get in touch via support and we'll work to get you a solution that meets your needs.