deepseek-ai/deepseek-harness · error · Error

workspace root "${workspaceRoot}" is not a directory

Error message

workspace root "${workspaceRoot}" is not a directory

What it means

Error "workspace root "${workspaceRoot}" is not a directory" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/lsp/lsp-stdio/src/host.ts:52

  workspaceRoot: string,
  signal?: AbortSignal,
): Promise<HostWorkspace> {
  throwIfAborted(signal)
  let target: FsTarget
  try {
    target = await fs.resolve(workspaceRoot, signal === undefined ? {} : { signal })
  } catch (error: unknown) {
    throwIfAborted(signal)
    throw new Error(`workspace root "${workspaceRoot}" cannot be resolved: ${messageOf(error)}`, { cause: error })
  }
  throwIfAborted(signal)
  const info = await fs.stat(target, signal).catch((error: unknown) => {
    throwIfAborted(signal)
    throw error
  })
  throwIfAborted(signal)
  if (info?.type !== 'directory') {
    throw new Error(`workspace root "${workspaceRoot}" is not a directory`)
  }
  return {
    target,
    canonicalPath: fs.processPath(target),
    fileUrl: fs.fileUrl(target),
  }
}

/**
 * Resolve, contain, and read one byte-bounded query source through `ctx.fs`.
 * This layer owns the LSP-specific complete-document cap while the filesystem
 * provider owns streaming, regular-file checks, and UTF-8 validation.
 * @param fs - filesystem provider sharing the server's execution world.
 * @param filePath - absolute source path or path relative to `workspace`.
 * @param workspace - already-canonical workspace.
 * @param maxDocumentBytes - largest complete source accepted by this host.
 * @param signal - optional cancellation.
 * @returns canonical file URI and current text.

View on GitHub (pinned to b150a551b8)

Solutions

1. Point workspaceRoot at a directory, not a file.

When it happens

Trigger: Thrown at packages/lsp/lsp-stdio/src/host.ts:52 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/6e2182724f61de20. Report an issue: GitHub.