Kong/insomnia · error

Unable to read cookie: ${cookie}

Error message

Unable to read cookie: ${cookie}

What it means

Error "Unable to read cookie: ${cookie}" thrown in Kong/insomnia.

Source

Thrown at packages/insomnia/src/main/ipc/cookies.ts:30

  setCookieStrings: string[];
  currentUrl: string;
  cookieJar: Cookie[];
}

interface AddSetCookiesResult {
  cookies: Cookie[];
  rejectedCookies: string[];
}

const parseCookieFromJSON = (cookie: CookieInput) => {
  return typeof cookie === 'string' ? ToughCookie.fromJSON(cookie) : ToughCookie.fromJSON(cookie);
};

const cookieToString = (cookie: CookieInput) => {
  const parsedCookie = parseCookieFromJSON(cookie);

  if (parsedCookie === null) {
    throw new Error(`Unable to read cookie: ${cookie}`);
  }

  let value = parsedCookie.toString();

  if (parsedCookie.domain && parsedCookie.hostOnly) {
    value += `; Domain=${parsedCookie.domain}`;
  }

  return value;
};

const getCookiesForUrl = (cookies: Cookie[], url: string): Cookie[] => {
  try {
    const sanitized = cookies.map(c => ({
      ...c,
      expires: c.expires === null || c.expires === undefined ? 'Infinity' : c.expires,
    }));
    const jar = CookieJar.fromJSON(JSON.stringify({ cookies: sanitized }));

View on GitHub (pinned to d9bb2b0142)

When it happens

Trigger: Thrown at packages/insomnia/src/main/ipc/cookies.ts:30 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of Kong/insomnia@d9bb2b0142 (2026-08-26). Data as JSON: /api/errors/8ba5113f77bd346f. Report an issue: GitHub.