{"record":{"id":"18d4eeb1687b70b3","repo":"ComposioHQ/composio","slug":"error-reading-file-at-filepath-error","errorCode":null,"errorMessage":"Error reading file at ${filePath}: ${error}","messagePattern":"Error reading file at (.+?): (.+?)","errorType":"exception","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"ts/packages/core/src/utils/fileUtils.node.ts","lineNumber":166,"sourceCode":"\nconst readFileContent = async (\n  filePath: string\n): Promise<{ fileName: string; content: string; mimeType: string }> => {\n  try {\n    if (!platform.supportsFileSystem) {\n      throw new Error('File system operations are not supported in this runtime environment');\n    }\n    const content = platform.readFileSync(filePath);\n    return {\n      fileName: generateTimestampedFilename(filePath.split('.').pop() || 'txt'),\n      content:\n        content instanceof Uint8Array\n          ? uint8ArrayToBase64(content)\n          : uint8ArrayToBase64(new TextEncoder().encode(content)),\n      mimeType: 'application/octet-stream',\n    };\n  } catch (error) {\n    throw new Error(`Error reading file at ${filePath}: ${error}`);\n  }\n};\n\nconst readFileContentFromURL = async (\n  path: string,\n  signal?: AbortSignal\n): Promise<{ fileName: string; content: string; mimeType: string }> => {\n  // SSRF guard: `path` is user-supplied (and can come from an LLM-produced tool\n  // argument), so it must not be allowed to reach internal/private addresses or\n  // redirect into them. See ssrfGuard.node.ts.\n  const response = await ssrfSafeFetch(path, { signal });\n  if (!response.ok) {\n    // The error path never reads the body, so release it explicitly (mirrors\n    // `readResponseBodyWithLimit`) instead of leaving it to the garbage collector.\n    await response.body?.cancel().catch(() => undefined);\n    throw new Error(`Failed to fetch file: ${response.statusText}`);\n  }\n  const content = await readResponseBodyWithLimit(response);","sourceCodeStart":148,"sourceCodeEnd":184,"githubUrl":"https://github.com/ComposioHQ/composio/blob/64b1b85502b1beeb2379e6c9e8bf1104504fa637/ts/packages/core/src/utils/fileUtils.node.ts#L148-L184","documentation":"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.","triggerScenarios":"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).","commonSituations":"Typos in paths, relative paths resolved against an unexpected cwd, containerized apps where the file was not mounted, or read-only filesystems.","solutions":["Verify the path exists and is readable before calling (fs.existsSync / fs.accessSync).","Use an absolute path built from import.meta.url or process.cwd().","Check the wrapped message after the colon — it contains the underlying OS error."],"exampleFix":"// before\nawait readFile('./data/input.csv');\n// after\nimport path from 'node:path';\nawait readFile(path.resolve(import.meta.dirname, 'data/input.csv'));","handlingStrategy":"validation","validationCode":"import fs from 'node:fs';\nif (!fs.existsSync(p) || !fs.statSync(p).isFile()) throw new Error(`missing file: ${p}`);","typeGuard":null,"tryCatchPattern":"try { await readFile(p); }\ncatch (e) { if (/^Error reading file at/.test((e as Error).message)) {/* inspect suffix for OS error */} throw e; }","preventionTips":["Build absolute paths with path.resolve/import.meta.url.","Check permissions in containers and CI runners."],"tags":["filesystem","node","io","typescript"],"backgroundTag":"file-read-failure","analyzedSha":"64b1b85502b1beeb2379e6c9e8bf1104504fa637","analyzedAt":"2026-08-28T15:39:33.623Z","schemaVersion":2},"datasetVersion":"2026-08-28T16:17:29.566Z"}