usebruno/bruno · error · BrunoError

Failed to read ${file.name}: ${err.message}

Error message

Failed to read ${file.name}: ${err.message}

What it means

Per-file catch in the readMultipleFiles loop. Fires when readFile() rejects for a given file (JSON.parse error inside the FileReader.onload, or fileReader.onerror). The original message is appended.

Source

Thrown at packages/bruno-app/src/utils/importers/file-reader.js:59

};

export const readMultipleFiles = async (files) => {
  if (!files || files.length === 0) {
    throw new BrunoError('No files selected');
  }

  const parsedFiles = [];

  for (const file of files) {
    if (!file.name.toLowerCase().endsWith('.json')) {
      throw new BrunoError(`Invalid file type: ${file.name}. Only JSON files are supported.`);
    }

    try {
      const parsedFile = await readFile(file);
      parsedFiles.push(parsedFile);
    } catch (err) {
      throw new BrunoError(`Failed to read ${file.name}: ${err.message}`);
    }
  }

  return parsedFiles;
};

View on GitHub (pinned to 9bdd81c7bd)

Solutions

1. Open the named file with a JSON validator to find the syntax error.
2. Re-export or repair the file, then retry the import.
3. Import files individually to isolate which one is malformed.

const text = await file.text();
try { JSON.parse(text); } catch (e) { throw new Error(`${file.name} is invalid JSON: ${e.message}`); }

try {
  await readMultipleFiles(files);
} catch (err) {
  const m = err.message.match(/Failed to read (.*?): (.*)/);
  if (m) console.error(`${m[1]}: ${m[2]}`);
  throw err;
}

When it happens

Trigger: A selected .json file that fails JSON.parse (syntax error) or triggers a FileReader error (permission, read failure). The wrapper names the file.

Common situations: One JSON file among several is corrupted, has trailing commas/comments, or is unreadable due to permissions; the rest import fine.

Related errors

• Failed to parse the file – ensure it is valid JSON or YAML
• Failed to process ${parsedFile.fileName}: ${err.message}
• Invalid environment: expected an object
• Invalid environment: missing or invalid variables array
• Invalid variable at index ${index}: expected an object

AI-assisted analysis of usebruno/bruno@9bdd81c7bd (2026-08-13). Data as JSON: /api/errors/5f846cbb930145a6. Report an issue: GitHub.