EDAM topics and Keywords that are in the catalogue are not present in the json-ld format pages, although these are available from the API.
This is a problem because TeSS is scraping the json-ld pages.
Example:
https://catalogue.france-bioinformatique.fr/api/event/740/ has "topics" with edam ontology terms, as well as "keywords", but https://catalogue.france-bioinformatique.fr/api/event/740/?format=json-ld doesn't have them. https://catalogue.france-bioinformatique.fr/api/event/740/?format=json has them.