deepseek-ai/deepseek-harness · error

new session failed:

Error message

new session failed:

What it means

Error "new session failed:" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/client/runtime/src/client/workspaces/service.ts:190

   * Workspace at all, clear the selection into the New Session view state.
   * Connect failures are non-fatal (console diagnostics; the current view
   * stays usable).
   * @param workspaceId - explicit target Workspace for scoped actions.
   */
  startSession(workspaceId?: WorkspaceId): void {
    const workspace = this.list.getSnapshot()
    const current = this.sessions.list.getSnapshot().current
    const currentWorkspaceId = current === undefined
      ? undefined
      : workspace.items.find(item => item.sessionIds.includes(current))?.workspaceId
    const target = workspaceId ?? currentWorkspaceId ?? workspace.recentWorkspaceId
    if (target === undefined) {
      this.sessions.clear()
      return
    }
    void this.connectWorkspace(target).then(
      (sessionId) => { this.sessions.open(sessionId) },
      (reason: unknown) => { console.warn('new session failed:', reason) },
    )
  }

  /**
   * Register an existing path as a Workspace.
   * @param input - the Host create payload.
   * @returns the created or idempotently resolved Workspace.
   */
  async create(input: { path: string }): Promise<WorkspaceView> {
    const result = await this.manager.create(input)
    if (!result.ok) throw new WorkspaceCreateError(result.error)
    return result.value.workspace
  }

  /**
   * Open the Host's native directory picker (the `native` capability).
   * @returns the selected path, or null when the user cancelled.
   */

View on GitHub (pinned to b150a551b8)

Solutions

1. Check the session service error details; verify storage and configuration, then retry creating the session.

When it happens

Trigger: Thrown at packages/client/runtime/src/client/workspaces/service.ts:190 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/eee6116b11872367. Report an issue: GitHub.