Impossible de définir le modèle LLM IA par défaut même après avoir créé un LLM disponible

Voici les journaux pertinents qui contiennent les opérations de test de la disponibilité des LLM et de définition du modèle par défaut.

Started POST "/admin/plugins/discourse-ai/ai-llms/test.json" for 172.68.225.73 at 2026-03-20 02:11:07 +0000
Processing by DiscourseAi::Admin::AiLlmsController#test as JSON
  Parameters: {"ai_llm"=>{"max_prompt_tokens"=>"32000", "max_output_tokens"=>"2000", "ai_secret_id"=>"2", "tokenizer"=>"DiscourseAi::Tokenizer::OpenAiTokenizer", "url"=>"https://api.chatanywhere.org", "display_name"=>"gpt-4.1", "name"=>"gpt-4.1", "provider"=>"open_ai", "vision_enabled"=>"false", "input_cost"=>"0.7", "output_cost"=>"2.8", "cached_input_cost"=>"0.7", "cache_write_cost"=>"0.7", "provider_params"=>{"organization"=>"", "disable_native_tools"=>"", "reasoning_effort"=>"none", "disable_streaming"=>"", "service_tier"=>"default"}, "allowed_attachment_types"=>["doc", "docx", "html", "markdown", "pdf", "rtf", "txt"]}}
Completed 200 OK in 252ms (Views: 0.2ms | ActiveRecord: 0.0ms (0 queries, 0 cached) | GC: 0.7ms)
Started PUT "/admin/plugins/discourse-ai/ai-llms/3" for 172.68.225.73 at 2026-03-20 02:11:10 +0000
Processing by DiscourseAi::Admin::AiLlmsController#update as */*
  Parameters: {"ai_llm"=>{"max_prompt_tokens"=>32000, "max_output_tokens"=>2000, "ai_secret_id"=>2, "tokenizer"=>"DiscourseAi::Tokenizer::OpenAiTokenizer", "url"=>"https://api.chatanywhere.org", "display_name"=>"gpt-4.1", "name"=>"gpt-4.1", "provider"=>"open_ai", "vision_enabled"=>false, "input_cost"=>0.7, "output_cost"=>2.8, "cached_input_cost"=>0.7, "cache_write_cost"=>0.7, "provider_params"=>{"organization"=>nil, "disable_native_tools"=>nil, "reasoning_effort"=>"none", "disable_streaming"=>nil, "service_tier"=>"default"}, "llm_quotas"=>[], "allowed_attachment_types"=>["doc", "docx", "html", "markdown", "pdf", "rtf", "txt"]}, "id"=>"3"}
Completed 200 OK in 61ms (Views: 14.4ms | ActiveRecord: 0.0ms (0 queries, 0 cached) | GC: 0.7ms)
Started GET "/admin/plugins/discourse-ai/ai-llms.json" for 172.68.225.73 at 2026-03-20 02:11:12 +0000
Processing by DiscourseAi::Admin::AiLlmsController#index as JSON
Completed 200 OK in 47ms (Views: 0.8ms | ActiveRecord: 0.0ms (0 queries, 0 cached) | GC: 2.2ms)
Started GET "/admin/config/site_settings.json?plugin=discourse-ai&category=discourse_ai" for 172.68.225.73 at 2026-03-20 02:11:12 +0000
Processing by Admin::Config::SiteSettingsController#index as JSON
  Parameters: {"plugin"=>"discourse-ai", "category"=>"discourse_ai"}
Completed 200 OK in 103ms (Views: 0.2ms | ActiveRecord: 0.0ms (0 queries, 0 cached) | GC: 4.9ms)
Started GET "/admin/config/site_settings.json?plugin=discourse-ai" for 172.68.225.73 at 2026-03-20 02:11:12 +0000
Processing by Admin::Config::SiteSettingsController#index as JSON
  Parameters: {"plugin"=>"discourse-ai"}
Completed 200 OK in 98ms (Views: 0.1ms | ActiveRecord: 0.0ms (0 queries, 0 cached) | GC: 0.0ms)
Started PUT "/admin/site_settings/ai_default_llm_model" for 172.68.225.73 at 2026-03-20 02:11:17 +0000
Processing by Admin::SiteSettingsController#update as */*
  Parameters: {"ai_default_llm_model"=>"3", "id"=>"ai_default_llm_model"}
Completed 422 Unprocessable Entity in 265ms (Views: 0.1ms | ActiveRecord: 0.0ms (0 queries, 0 cached) | GC: 0.0ms)