Listeria stopped working since June 3. At least, it happens in cawiki and Wikidata, where there's a thread in the project chat https://www.wikidata.org/wiki/Wikidata:Project_chat?markasread=1185869784&markasreadwiki=wikidatawiki#Did_anyone_notice_that_ListeriaBot_is_down? - and I assume the same happens in all projects.