[fix] Supertest - GCP Error - 2 UNKNOWN: Getting metadata from plugin failed with error: Unexpected Gaxios Error

Describe the bug

Node.js version: v25.1.0

OS version: macOS Tahoe 26.1

Description: Getting an error "2 UNKNOWN: Getting metadata from plugin failed with error: Unexpected Gaxios Error" while trying to retrieve the GCP secret.

Actual behavior

Getting an error "2 UNKNOWN: Getting metadata from plugin failed with error: Unexpected Gaxios Error" while trying to retrieve the GCP secret.

Expected behavior

Should be able to retrieve the GCP secrets successfully without any errors.

Code to reproduce

import request, { Response } from "supertest";

describe("Endpoints", () => { let authToken: string; beforeAll(async () => { authToken = await getAccessToken(BASE_URL); });

export async function getAccessToken(baseUrl: string): Promise { const username = await getSecretValue("<secret_name>"); const reqBody = "<request_body>";

request(baseUrl) .post("/auth/token") .auth(username) .set("Content-Type", "application/x-www-form-urlencoded") .send(reqBody); }

import { SecretManagerServiceClient } from '@google-cloud/secret-manager'; import { gcp_secret_project_name } from '../../config';

const client = new SecretManagerServiceClient();

export async function getSecretValue(secretId: string): Promise { const [version] = await client.accessSecretVersion({ name: projects/${gcp_secret_project_name}/secrets/${secretId}/versions/latest, });

return version.payload?.data?.toString() || ''; }

Failing in this line of code: await client.accessSecretVersion({ name: projects/${gcp_secret_project_name}/secrets/${secretId}/versions/latest, }); with: 2 UNKNOWN: Getting metadata from plugin failed with error: Unexpected Gaxios Error

Checklist

• I have searched through GitHub issues for similar issues.
• I have completely read through the README and documentation.
• I have tested my code with the latest version of Node.js and this package and confirmed it is still not working.