deepseek-ai/deepseek-harness · error · Error

subagent "${id}" has no stored log artifact

Error message

subagent "${id}" has no stored log artifact

What it means

Error "subagent "${id}" has no stored log artifact" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/host/apiproxy/src/session-export.ts:246

    for (const [id, ref] of imageRefsInArtifact(content)) media.set(id, ref)
  }
  rememberMedia(root.content)
  yield { path: root.filename, content: root.content }
  if (includeDescendants) {
    const seen = new Set<SessionId>([sessionId])
    const collect = async function* (
      nodes: readonly SessionLineageNode[],
    ): AsyncGenerator<SessionLogZipEntry> {
      for (const node of nodes) {
        signal?.throwIfAborted()
        const id = node.session.header.id
        if (seen.has(id)) continue
        seen.add(id)
        await flushLiveSessionLog(deps, id, signal)
        const raw = await deps.sessionPersistence.readRaw(id, signal)
        signal?.throwIfAborted()
        if (raw === undefined) {
          throw new Error(`subagent "${id}" has no stored log artifact`)
        }
        rememberMedia(raw.content)
        yield {
          path: `subagents/${safeSessionIdSegment(id)}/${raw.filename}`,
          content: raw.content,
        }
        yield* collect(node.descendants)
      }
    }
    const lineage = await deps.sessionQuery.traceSession(sessionId, signal)
    signal?.throwIfAborted()
    yield* collect(lineage.descendants)
  }
  for (const ref of media.values()) {
    signal?.throwIfAborted()
    const stored = await deps.attachments.readImage(ref, signal)
    signal?.throwIfAborted()
    yield { path: mediaEntryPath(ref), data: stored.data }

View on GitHub (pinned to b150a551b8)

When it happens

Trigger: Thrown at packages/host/apiproxy/src/session-export.ts:246 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of deepseek-ai/deepseek-harness@b150a551b8 (2026-08-24). Data as JSON: /api/errors/07584d2773c4863f. Report an issue: GitHub.