deepseek-ai/deepseek-harness · error · AggregateError

SDK server teardown failed

Error message

SDK server teardown failed

What it means

Error "SDK server teardown failed" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/sdk/server/src/server.ts:179

    this.sessions.clear()
    const failures: unknown[] = []
    while (this.disposers.length > 0) {
      try {
        this.disposers.pop()?.()
      } catch (error) {
        failures.push(error)
      }
    }
    const teardownResults = await Promise.allSettled([
      ...records.map(rec => Promise.resolve().then(() => rec.handle.dispose())),
      ...(this.llmFiber === undefined ? [] : [Promise.resolve().then(() => this.llmFiber?.dispose())]),
    ])
    this.llmFiber = undefined
    failures.push(...teardownResults
      .filter((result): result is PromiseRejectedResult => result.status === 'rejected')
      .map(result => result.reason as unknown))
    if (failures.length === 1) throw failures[0]
    if (failures.length > 1) throw new AggregateError(failures, 'SDK server teardown failed')
    return {}
  }

  /**
   * Dispatch one incoming JSON-RPC request to its typed handler. Throws (→ a
   * JSON-RPC error response) on an unknown method.
   * @param method - the JSON-RPC method name.
   * @param params - the raw params object from the wire.
   * @returns the handler's result, to be serialized as the response.
   */
  async handleRequest(method: string, params: Record<string, unknown> | undefined): Promise<unknown> {
    switch (method) {
      case 'initialize':
        return this.initialize(params as unknown as InitializeParams)
      case 'session/prompt':
        return this.prompt(params as unknown as SessionPromptParams)
      case 'shutdown':
        return this.shutdown()

View on GitHub (pinned to b150a551b8)

Solutions

1. Inspect the teardown failure cause attached to the error and close the offending session or transport manually.

When it happens

Trigger: Thrown at packages/sdk/server/src/server.ts:179 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/9770761e811cb4c2. Report an issue: GitHub.