Hello. They both have an incorrect formatter URL. It should be https://araneae.nmbe.ch/data/$id for 560 and https://wildlife-species.canada.ca/species-risk-registry/species/speciesDetails_e.cfm?sid=$id for 1971. The latter comes from a personal mistake. Sorry. Can you fix this? On a side note, maybe Mix'n'match admins should be allowed to change this by themselves through the Catalog editor?