{"record":{"id":"e35e1fb09d1f0076","repo":"vxcontrol/pentagi","slug":"failed-to-refine-subtasks-for-task-d-w","errorCode":null,"errorMessage":"failed to refine subtasks for task %d: %w","messagePattern":"failed to refine subtasks for task (.+?): %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"backend/pkg/controller/subtasks.go","lineNumber":105,"sourceCode":"\t\t\tDescription: info.Description,\n\t\t})\n\t\tif err != nil {\n\t\t\treturn fmt.Errorf(\"failed to create subtask for task %d: %w\", stc.taskCtx.TaskID, err)\n\t\t}\n\t}\n\n\treturn nil\n}\n\nfunc (stc *subtaskController) RefineSubtasks(ctx context.Context) error {\n\tsubtasks, err := stc.taskCtx.DB.GetTaskSubtasks(ctx, stc.taskCtx.TaskID)\n\tif err != nil {\n\t\treturn fmt.Errorf(\"failed to get task %d subtasks: %w\", stc.taskCtx.TaskID, err)\n\t}\n\n\tplan, err := stc.taskCtx.Provider.RefineSubtasks(ctx, stc.taskCtx.TaskID)\n\tif err != nil {\n\t\treturn fmt.Errorf(\"failed to refine subtasks for task %d: %w\", stc.taskCtx.TaskID, err)\n\t}\n\n\tif len(plan) == 0 {\n\t\treturn nil // no subtasks refined\n\t}\n\n\tsubtaskIDs := make([]int64, 0, len(subtasks))\n\tfor _, subtask := range subtasks {\n\t\tif subtask.Status == database.SubtaskStatusCreated {\n\t\t\tsubtaskIDs = append(subtaskIDs, subtask.ID)\n\t\t}\n\t}\n\n\terr = stc.taskCtx.DB.DeleteSubtasks(ctx, subtaskIDs)\n\tif err != nil {\n\t\treturn fmt.Errorf(\"failed to delete subtasks for task %d: %w\", stc.taskCtx.TaskID, err)\n\t}\n\tstc.InvalidateSubtasks(subtaskIDs)","sourceCodeStart":87,"sourceCodeEnd":123,"githubUrl":"https://github.com/vxcontrol/pentagi/blob/ea665308baaff015b226f308438a68d929d0f29b/backend/pkg/controller/subtasks.go#L87-L123","documentation":"After loading existing subtasks, RefineSubtasks calls the LLM provider's RefineSubtasks to generate a new plan. This error wraps a failure of that provider call — network errors, provider API errors, malformed LLM output, or missing provider credentials. Refinement aborts before any DB mutation.","triggerScenarios":"The configured LLM provider is unreachable, the API key is invalid/quota-exhausted, the model returns unparseable JSON, or ctx is cancelled during the (long) LLM call.","commonSituations":"Expired or missing provider API key in .env; provider rate limit hit during heavy usage; model name changed after provider upgrade; request timeout on slow models.","solutions":["Inspect the wrapped cause in logs to identify provider vs network failure","Verify provider API key and base URL in settings/.env","Retry the refine operation; LLM calls are idempotent up to this point","Configure a fallback provider in provider config"],"exampleFix":null,"handlingStrategy":"retry","validationCode":"if provider == nil { return fmt.Errorf(\"no provider configured\") }\n// pre-check credentials with a lightweight provider health/list-models call","typeGuard":null,"tryCatchPattern":"plan, err := stc.taskCtx.Provider.RefineSubtasks(ctx, taskID)\nif err != nil {\n    if errors.Is(err, context.DeadlineExceeded) { return retryWithBackoff(err) }\n    return fmt.Errorf(\"failed to refine subtasks for task %d: %w\", taskID, err)\n}","preventionTips":["Configure at least one valid provider and a fallback provider","Watch API key expiry and quota usage","Set generous LLM call timeouts to avoid mid-refinement cancellation"],"tags":["llm","provider","refine"],"backgroundTag":"llm-provider-call-failed","analyzedSha":"ea665308baaff015b226f308438a68d929d0f29b","analyzedAt":"2026-09-01T14:16:31.421Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}