deepseek-ai/deepseek-harness · error · TerminalError

OWNER_NOT_LIVE

OWNER_NOT_LIVE

Error message

agent "${owner.id}" is not the registered PTY owner

What it means

Error "agent "${owner.id}" is not the registered PTY owner" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/terminal/terminal/src/index.ts:324

   * @returns owner-visible snapshots in publication order.
   */
  list(owner: Agent): TerminalSessionSnapshot[] {
    return [...this.sessions.values()]
      .filter(record => record.owner === owner)
      .map(record => this.snapshot(record))
  }

  private assertActive(): void {
    if (this.disposing) throw new TerminalError('PTY service is disposing', 'SERVICE_DISPOSING')
  }

  private isLiveOwner(owner: Agent): boolean {
    return !this.disposedOwners.has(owner) && this.ctx.get('agents')?.get(owner.id) === owner
  }

  private ensureOwnerCleanup(owner: Agent): void {
    if (!this.isLiveOwner(owner)) {
      throw new TerminalError(`agent "${owner.id}" is not the registered PTY owner`, 'OWNER_NOT_LIVE')
    }
    if (this.ownerCleanups.has(owner)) return
    const detach = owner.ctx.effect(() => async () => {
      this.disposedOwners.add(owner)
      this.ownerCleanups.delete(owner)
      await this.disposeOwned(owner)
    }, 'pty.ownerCleanup()')
    this.ownerCleanups.set(owner, detach)
  }

  private reserveName(owner: Agent, name: string | undefined): () => void {
    if (name === undefined) return () => {}
    if ([...this.sessions.values()].some(record => record.owner === owner && record.name === name)) {
      throw new TerminalError(`PTY session name "${name}" already exists for this owner`, 'DUPLICATE_NAME')
    }
    const reserved = this.reservedNames.get(owner) ?? new Set<string>()
    if (reserved.has(name)) throw new TerminalError(`PTY session name "${name}" is already being created`, 'DUPLICATE_NAME')
    reserved.add(name)

View on GitHub (pinned to b150a551b8)

Solutions

1. Call PTY operations from the agent that registered as the PTY owner.

When it happens

Trigger: Thrown at packages/terminal/terminal/src/index.ts:324 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/11985febdd3e1ee3. Report an issue: GitHub.