octokit request error - JSON web token could not be decoded

 import nock  from "nock";
 import { myProbotApp } from "../app.js";
 import { Probot, ProbotOctokit }  from "probot";
 import { jest } from '@jest/globals';
 import fs from "fs";
 import path from "path";
 import { fileURLToPath } from 'url';
 import pino from 'pino';
 
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
 const repoCreatedPayload = JSON.parse(fs.readFileSync(path.join(__dirname, "fixtures/repository.created.json"), 'utf8'));
 const collaboratorRemovedBody = {"permission": "pull"};
 const logger = pino();
 const privateKey = fs.readFileSync(
   path.join(__dirname, "fixtures/mock-cert.pem"),
   "utf-8"
 );
 
 describe("My Probot app", () => {
   let probot;
 
   beforeEach(() => {
     nock.disableNetConnect();
     probot = new Probot({
       appId: 123,
       privateKey,
       Octokit: ProbotOctokit.defaults({
         retry: { enabled: false },
         throttle: { enabled: false },
       }),
       log: logger,
     });    
     myProbotApp(probot);
   });
 
   test("non-forked repo is created, events happen as expected", async () => {
     process.env.SA_WHITELIST = "svc_account";
     process.env.PAVED_PATH_TEMPLATES = "test-template"
     process.env.PAVED_PATH_TEAM = "test-team"
     process.env.ORG = "SAMPLE-ORG";
     nock("https://api.github.com")
       .post("/app/installations/123/access_tokens")
       .reply(200, {
         token: "test",
         permissions: {
           issues: "write",
         },
       })
     nock("https://api.github.com")
       .post("/repos/SAMPLE-ORG/tester-fork/issues")
         .reply(200);
     nock("https://api.github.com")
       .get("/repos/SAMPLE-ORG/tester-fork")
         .reply(200, { default_branch: "main", owner: { login  : "svc_account" } });
     nock("https://api.github.com")
       .put("/repos/SAMPLE-ORG/tester-fork/collaborators/homer_thdgit", (body) => {
         expect(body).toMatchObject(collaboratorRemovedBody);
         return true;
       })
       .reply(200);
     nock("https://api.github.com")
       .put("/repos/SAMPLE-ORG/tester-fork/branches/main/protection")
         .reply(200);
 
       // Receive a webhook event
       await probot.receive({ name: "repository.created", payload: repoCreatedPayload });
       // validate all mocks were called
       expect(nock.pendingMocks()).toStrictEqual([]);
   });
 
   afterEach(() => {
     nock.cleanAll();
     nock.enableNetConnect();
     jest.clearAllMocks();
   });
 });

RequestError [HttpError]: A JSON web token could not be decoded - https://docs.github.com/rest
         at /Users/JMD8SAG/Projects/protectolator/node_modules/[@octokit/request/dist-node/index.js:125:21](https://matrix.to/#/@octokit/request/dist-node/index.js:125:21)
         at processTicksAndRejections (node:internal/process/task_queues:95:5)
         at hook (/Users/username/Projects/project1/node_modules/[@octokit/auth-app/dist-node/index.js:365:18](https://matrix.to/#/@octokit/auth-app/dist-node/index.js:365:18))
         at Job.doExecute (/Users/username/Projects/project1/node_modules/bottleneck/light.js:405:18) {
       status: 401,
       response: {
         url: 'https://api.github.com/app/installations/123/access_tokens',
         status: 401,
         headers: {
           'access-control-allow-origin': '*',
           'access-control-expose-headers': 'ETag, Link, Location, Retry-After, X-GitHub-OTP, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Used, X-RateLimit-Resource, X-RateLimit-Reset, X-OAuth-Scopes, X-Accepted-OAuth-Scopes, X-Poll-Interval, X-GitHub-Media-Type, X-GitHub-SSO, X-GitHub-Request-Id, Deprecation, Sunset',
           'content-length': '117',
           'content-security-policy': "default-src 'none'",
           'content-type': 'application/json; charset=utf-8',
           date: 'Tue, 21 Oct 2025 00:32:07 GMT',
           'referrer-policy': 'origin-when-cross-origin, strict-origin-when-cross-origin',
           server: '[github.com](http://github.com/)',
           'strict-transport-security': 'max-age=31536000; includeSubdomains; preload',
           vary: 'Accept-Encoding, Accept, X-Requested-With',
           'x-content-type-options': 'nosniff',
           'x-frame-options': 'deny',
           'x-github-media-type': 'github.v3; format=json',
           'x-github-request-id': '2712:386DA2:2A3D62C:B34F859:68F6D487',
           'x-xss-protection': '0'
         },
         data: {
           message: 'A JSON web token could not be decoded',
           documentation_url: 'https://docs.github.com/rest',
           status: '401'
         }
       },
       request: {
         method: 'POST',
         url: 'https://api.github.com/app/installations/123/access_tokens',
         headers: {
           accept: 'application/vnd.github.v3+json',
           'user-agent': 'probot/13.0.0 octokit-core.js/5.2.2 Node.js/18.20.5 (darwin; arm64)',
           authorization: 'bearer [REDACTED]'
         },
         request: { hook: [Function: bound bound register] }
       }
     }