deepseek-ai/deepseek-harness · error · Error

cannot attach session '${sessionId}' to workspace '${this.re

Error message

cannot attach session '${sessionId}' to workspace '${this.record.path}': its cwd '${header.cwd}' is not a directory

What it means

Error "cannot attach session '${sessionId}' to workspace '${this.record.path}': its cwd '${header.cwd}' is not a directory" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/workspace/workspace/src/entity.ts:133

      const header = await this.host.readSessionHeader(sessionId)
      if (header.cwd === undefined) {
        throw new Error(
          `cannot attach session '${sessionId}' to workspace '${this.record.path}': `
          + 'its stored header carries no cwd to validate against',
        )
      }
      let cwd: string
      try {
        cwd = await realpathNormalize(header.cwd)
      } catch (error) {
        throw new Error(
          `cannot attach session '${sessionId}' to workspace '${this.record.path}': `
          + `its cwd '${header.cwd}' does not resolve, so it cannot be validated`,
          { cause: error },
        )
      }
      if (!(await stat(cwd)).isDirectory()) {
        throw new Error(
          `cannot attach session '${sessionId}' to workspace '${this.record.path}': `
          + `its cwd '${header.cwd}' is not a directory`,
        )
      }
      if (cwd !== this.record.path) {
        throw new Error(
          `cannot attach session '${sessionId}' to workspace '${this.record.path}': `
          + `its cwd resolves to '${cwd}'`,
        )
      }
      this.host.rememberSessionPath(sessionId, cwd)
    }
    await this.mutate(record => record.sessionIds.includes(sessionId)
      ? record
      : { ...record, sessionIds: [sessionId, ...record.sessionIds] })
  }

  async insertSessionBefore(sessionId: SessionId, beforeSessionId?: SessionId): Promise<void> {

View on GitHub (pinned to b150a551b8)

Solutions

1. Point the session's cwd at an existing directory, or create the directory, before attaching the session to the workspace.

When it happens

Trigger: Thrown at packages/workspace/workspace/src/entity.ts:133 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/a466e1e19b8f59cd. Report an issue: GitHub.