deepseek-ai/deepseek-harness · error · Error

cannot validate session '${id}': session persistence holds n

Error message

cannot validate session '${id}': session persistence holds no such session

What it means

Error "cannot validate session '${id}': session persistence holds no such session" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/workspace/workspace/src/index.ts:628

        )
      }
    }
  }

  private async readSessionHeader(id: SessionId): Promise<SessionHeader> {
    const live = this.ctx.get('sessions')?.get(id)
    if (live !== undefined) {
      this.headers.set(id, live.header)
      return live.header
    }
    const cached = this.headers.get(id)
    if (cached !== undefined) return cached

    const headers = await this.ctx.sessionPersistence.list()
    await this.indexHeaders(headers)
    const header = this.headers.get(id)
    if (header === undefined) {
      throw new Error(`cannot validate session '${id}': session persistence holds no such session`)
    }
    return header
  }

  private requireTable(): KvTable<WorkspaceId, WorkspaceRecord> {
    if (this.table === undefined) throw new Error('workspace registry is not started yet')
    return this.table
  }

  private requireState(): WorkspaceDomainState {
    if (this.state === undefined) throw new Error('workspace registry is not started yet')
    return this.state
  }

  private async setState(state: WorkspaceDomainState): Promise<void> {
    await (this.global as DomainGlobal<WorkspaceDomainState>).set(state)
    this.state = state
  }

View on GitHub (pinned to b150a551b8)

Solutions

1. Verify the session id; the session must exist in persistence before it can be validated or attached.

When it happens

Trigger: Thrown at packages/workspace/workspace/src/index.ts:628 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/e70d9216f5c2fb20. Report an issue: GitHub.