ComposioHQ/composio · error · Error

Error reading file at ${filePath}: ${error}

Error message

Error reading file at ${filePath}: ${error}

What it means

A catch-all wrapping any failure thrown while reading a local file (missing file, permission denied) into an Error with the path and underlying message. It originates from the try block around platform.readFileSync in readFileContent.

Source

Thrown at ts/packages/core/src/utils/fileUtils.node.ts:166

const readFileContent = async (
  filePath: string
): Promise<{ fileName: string; content: string; mimeType: string }> => {
  try {
    if (!platform.supportsFileSystem) {
      throw new Error('File system operations are not supported in this runtime environment');
    }
    const content = platform.readFileSync(filePath);
    return {
      fileName: generateTimestampedFilename(filePath.split('.').pop() || 'txt'),
      content:
        content instanceof Uint8Array
          ? uint8ArrayToBase64(content)
          : uint8ArrayToBase64(new TextEncoder().encode(content)),
      mimeType: 'application/octet-stream',
    };
  } catch (error) {
    throw new Error(`Error reading file at ${filePath}: ${error}`);
  }
};

const readFileContentFromURL = async (
  path: string,
  signal?: AbortSignal
): Promise<{ fileName: string; content: string; mimeType: string }> => {
  // SSRF guard: `path` is user-supplied (and can come from an LLM-produced tool
  // argument), so it must not be allowed to reach internal/private addresses or
  // redirect into them. See ssrfGuard.node.ts.
  const response = await ssrfSafeFetch(path, { signal });
  if (!response.ok) {
    // The error path never reads the body, so release it explicitly (mirrors
    // `readResponseBodyWithLimit`) instead of leaving it to the garbage collector.
    await response.body?.cancel().catch(() => undefined);
    throw new Error(`Failed to fetch file: ${response.statusText}`);
  }
  const content = await readResponseBodyWithLimit(response);

View on GitHub (pinned to 64b1b85502)

Solutions

1. Verify the path exists and is readable before calling (fs.existsSync / fs.accessSync).
2. Use an absolute path built from import.meta.url or process.cwd().
3. Check the wrapped message after the colon — it contains the underlying OS error.

Example fix

// before
await readFile('./data/input.csv');
// after
import path from 'node:path';
await readFile(path.resolve(import.meta.dirname, 'data/input.csv'));

import fs from 'node:fs';
if (!fs.existsSync(p) || !fs.statSync(p).isFile()) throw new Error(`missing file: ${p}`);

try { await readFile(p); }
catch (e) { if (/^Error reading file at/.test((e as Error).message)) {/* inspect suffix for OS error */} throw e; }

When it happens

Trigger: Calling readFile with a path that does not exist, is a directory, or lacks read permissions; also thrown in runtimes without FS support (wrapping error 381).

Common situations: Typos in paths, relative paths resolved against an unexpected cwd, containerized apps where the file was not mounted, or read-only filesystems.

Related errors

• File system operations are not supported in this runtime env
• File system operations are not supported in this runtime env
• Refusing to auto-upload "${attempted}": the file does not ex
• File not found: {file}. Please provide a valid file path.
• Not a file: {file}. Please provide a valid file path.

AI-assisted analysis of ComposioHQ/composio@64b1b85502 (2026-08-28). Data as JSON: /api/errors/18d4eeb1687b70b3. Report an issue: GitHub.