Kong/insomnia · error · InsoError

Failed to parse ${fileName}.

Error message

Failed to parse ${fileName}.

What it means

Error "Failed to parse ${fileName}." thrown in Kong/insomnia.

Source

Thrown at packages/insomnia-inso/src/db/adapters/insomnia-adapter.ts:104

      }
    | undefined;

  try {
    parsed = YAML.parse(content);

    if (!parsed?.__export_format) {
      const insomnia5Import = importInsomniaV5Data(content);

      if (insomnia5Import.length > 0) {
        parsed = {
          __export_format: 5,
          // @ts-expect-error -- TSCONVERSION
          resources: insomnia5Import,
        };
      }
    }
  } catch (error) {
    throw new InsoError(`Failed to parse ${fileName}.`, error);
  }

  // We are supporting only v4 and v5 files
  if (!parsed) {
    throw new InsoError(`Failed to parse ${fileName}.`);
  } else if (!parsed.__export_format) {
    throw new InsoError(`Expected an Insomnia v4 export file; unexpected data found in ${fileName}.`);
  } else if (parsed.__export_format !== 4 && parsed.__export_format !== 5) {
    throw new InsoError(
      `Expected an Insomnia v4 export file; found an Insomnia v${parsed.__export_format} export file in ${fileName}.`,
    );
  }

  // Transform filter to a set for faster search
  // If it is undefined, it will return an empty set
  const toFilter = new Set<string>(filterTypes);

  // Execute translation between raw and imported models

View on GitHub (pinned to d9bb2b0142)

When it happens

Trigger: Thrown at packages/insomnia-inso/src/db/adapters/insomnia-adapter.ts:104 when the library encounters an invalid state.

Common situations: See trigger scenarios.

Understand the failure class

• Parsing and encoding errors: unexpected token, malformed input — why parsers reject input and how to find the real culprit.

AI-assisted analysis of Kong/insomnia@d9bb2b0142 (2026-08-26). Data as JSON: /api/errors/eb269bf9abc10fe8. Report an issue: GitHub.