Referral Program Custom Code Error

[M_Mott]

Hi,

I'm trying to recreate the referral program described here. 

However, when I run the last custom code workflow to update the referral contact to attribute the new lead to them, I'm receiving a "Unhandled Promise Rejection." Here's the code from the link above. And here's the error message:

quest failed","reason":{"errorType":"HttpError","errorMessage":"HTTP request failed","response":{"statusCode":401,"body":{"status":"error","message":"Authentication credentials not found. This API supports both API Key and OAuth 2.0 authentication and you can find more details at https://developers.hubspot.com/docs/methods/auth/oauth-overview","correlationId":"30e6a1fa-a231-46ad-94aa-87f1eced4a86","category":"INVALID_AUTHENTICATION"},"headers":{"date":"Tue, 03 May 2022 13:45:47 GMT","content-type":"application/json;charset=utf-8","content-length":"316","connection":"close","cf-ray":"70597065a98059c1-IAD","strict-transport-security":"max-age=31536000; includeSubDomains; preload","vary":"Accept-Encoding","cf-cache-status":"DYNAMIC","access-control-allow-credentials":"false","expect-ct":"max-age=604800, report-uri=\"https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct\"","x-hubspot-correlation-id":"30e6a1fa-a231-46ad-94aa-87f1eced4a86","x-trace":"2B32E2962B5C921E3D642851280492D0C678F1F61F000000000000000000","report-to":"{\"endpoints\":[{\"url\":\"https:\\/\\/a.nel.cloudflare.com\\/report\\/v3?s=jLhRHUGmlC4kIAeoU21Og0G3ZnoU2OEhpwSHCrjZ1aPM%2Bg5xs3806jwZOIwVyAfV%2Fm8tDi2sDfqfET%2FCjaaGcvXKWN5mMk6U0A%2FMSOh%2BUT5Z6Vb1kuCWeiC%2F%2B9XN6Sdv\"}],\"group\":\"cf-nel\",\"max_age\":604800}","nel":"{\"success_fraction\":0.01,\"report_to\":\"cf-nel\",\"max_age\":604800}","server":"cloudflare","alt-svc":"h3=\":443\"; ma=86400, h3-29=\":443\"; ma=86400"},"request":{"uri":{"protocol":"https:","slashes":true,"auth":null,"host":"api.hubapi.com","port":443,"hostname":"api.hubapi.com","hash":null,"search":null,"query":null,"pathname":"/crm/v3/objects/contacts/search","path":"/crm/v3/objects/contacts/search","href":"https://api.hubapi.com/crm/v3/objects/contacts/search"},"method":"POST","headers":{"User-Agent":"hubspot-api-client-nodejs; 3.4.1","Accept":"application/json","content-type":"application/json","content-length":255}}},"body":{},"statusCode":401,"name":"HttpError","stack":["HttpError: HTTP request failed","    at Request._callback (/opt/nodejs/node_modules/@hubspot/api-client/lib/codegen/crm/contacts/api/searchApi.js:151:40)","    at Request.self.callback (/opt/nodejs/node_modules/request/request.js:185:22)","    at Request.emit (events.js:314:20)","    at Request.<anonymous> (/opt/nodejs/node_modules/request/request.js:1154:10)","    at Request.emit (events.js:314:20)","    at IncomingMessage.<anonymous> (/opt/nodejs/node_modules/request/request.js:1076:12)","    at Object.onceWrapper (events.js:420:28)","    at IncomingMessage.emit (events.js:326:22)","    at endReadableNT (_stream_readable.js:1241:12)","    at processTicksAndRejections (internal/process/task_queues.js:84:21)"]},"promise":{},"stack":["Runtime.UnhandledPromiseRejection: HttpError: HTTP request failed","    at process.<anonymous> (/var/runtime/index.js:35:15)","    at process.emit (events.js:314:20)","    at processPromiseRejections (internal/process/promises.js:209:33)","    at processTicksAndRejections (internal/process/task_queues.js:98:32)"]}

Anyone know of a fix or solution?