In Discourse v2026.2.0-latest +184, several Jobs::UserEmail dating from six days ago show up in SideKiq with "type"=>"user_posted":
Jobs::HandledExceptionWrapper: Wrapped ActionView::Template::Error: wrong number of arguments (given 1, expected 0)
Among the arguments, this one is suspect:
"display_username"=>"7 réponses",
Definitely seven replies does not look like a display username. Might be an argument that slipped. (Other such errors show a different reply count as display username.)