There seem to be a small number of Add-on packs (mine included) listed at https://www.swi-prolog.org/pack/list whose contents aren’t being displayed; instead just the message “Failed to process pack”. It doesn’t seem to affect anything else, i.e., they install and work as advertised, and using pack_list to get info from the server seems to work as well.
Any hints on how to troubleshoot this?