Confusingly, shortly after, I clicked on “Change settings” again, and the error no longer appeared. I don’t know if this means it was successful.
Here is the server log for this operation:
Started PUT "/admin/site_settings/ai_default_llm_model" for 172.68.225.73 at 2026-03-20 02:20:19 +0000
Processing by Admin::SiteSettingsController#update as */*
Parameters: {"ai_default_llm_model" => "3", "id" => "ai_default_llm_model"}
Completed 204 No Content in 2047ms (ActiveRecord: 0.0ms (0 queries, 0 cached) | GC: 0.5ms)
