# Custom Code - Get firstname & lastname from email address

**URL:** <https://community.hubspot.com/t/custom-code-get-firstname-lastname-from-email-address/88815>\
**Category:** Data Hub\
**Created:** [September 1, 2023, 3:15pm UTC](https://community.hubspot.com/t/custom-code-get-firstname-lastname-from-email-address/88815 "2023-09-01T15:15:56Z")\
**Posts on this page:** 1\
**Showing post:** 8

<div class="post-metadata">

**Author:** ![DamianKnapp](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/damianknapp/32/193315_2.png) [@DamianKnapp](https://community.hubspot.com/u/DamianKnapp)\
**Post date:** [October 4, 2023, 4:03pm UTC](https://community.hubspot.com/t/custom-code-get-firstname-lastname-from-email-address/88815/8 "2023-10-04T16:03:04Z")

</div>

Ahh ok - cool. So, i have changed this to node but i am now getting a new error

```auto
WARNING: The logs for this function have exceeded the 4KB limit.
...
th\":\"299\",\"content-type\":\"application/json;charset=utf-8\",\"date\":\"Wed, 04 Oct 2023 14:13:54 GMT\",\"nel\":\"{\\\"success_fraction\\\":0.01,\\\"report_to\\\":\\\"cf-nel\\\",\\\"max_age\\\":604800}\",\"report-to\":\"{\\\"endpoints\\\":[{\\\"url\\\":\\\"https:\\\\/\\\\/a.nel.cloudflare.com\\\\/report\\\\/v3?s=R1xxowtx0mun4hENbLNfeB6D8pGV9PDfJdYRMKneCXYxWPhTz5c7SUkOIVZbZ80AMu1zh9phiTEUAvMyfQP4MJt9SPrbkf5tNih%2FZymAXLdV%2FPvFnKBXbJ8a7cJA0F88\\\"}],\\\"group\\\":\\\"cf-nel\\\",\\\"max_age\\\":604800}\",\"server\":\"cloudflare\",\"strict-transport-security\":\"max-age=31536000; includeSubDomains; preload\",\"vary\":\"origin, Accept-Encoding\",\"x-content-type-options\":\"nosniff\",\"x-envoy-upstream-service-time\":\"3\",\"x-evy-trace-listener\":\"listener_https\",\"x-evy-trace-route-configuration\":\"listener_https/all\",\"x-evy-trace-route-service-name\":\"envoyset-translator\",\"x-evy-trace-served-by-pod\":\"iad02/hubapi-td/envoy-proxy-5b5c96c966-58hgh\",\"x-evy-trace-virtual-host\":\"all\",\"x-hubspot-auth-failure\":\"401 Unauthorized\",\"x-hubspot-correlation-id\":\"d648677e-8e57-436f-937d-be9d4aea1ebb\",\"x-request-id\":\"d648677e-8e57-436f-937d-be9d4aea1ebb\",\"x-trace\":\"2BF72E4BDF67F1EE00D32853021FA9998311A5AE28000000000000000000\"}"," at BasicApiResponseProcessor.<anonymous> (/opt/nodejs/node_modules/@hubspot/api-client/lib/codegen/crm/contacts/apis/BasicApi.js:247:23)"," at Generator.next (<anonymous>)"," at fulfilled (/opt/nodejs/node_modules/@hubspot/api-client/lib/codegen/crm/contacts/apis/BasicApi.js:5:58)"," at processTicksAndRejections (node:internal/process/task_queues:96:5)"]},"promise":{},"stack":["Runtime.UnhandledPromiseRejection: Error: HTTP-Code: 401","Message: An error occurred.","Body: {\"status\":\"error\",\"message\":\"Authentication credentials not found. This API supports OAuth 2.0 authentication and you can find more details at https://developers.hubspot.com/docs/methods/auth/oauth-overview\",\"correlationId\":\"d648677e-8e57-436f-937d-be9d4aea1ebb\",\"category\":\"INVALID_AUTHENTICATION\"}","Headers: {\"access-control-allow-credentials\":\"false\",\"cf-cache-status\":\"DYNAMIC\",\"cf-ray\":\"810e0734ae500497-FRA\",\"connection\":\"close\",\"content-length\":\"299\",\"content-type\":\"application/json;charset=utf-8\",\"date\":\"Wed, 04 Oct 2023 14:13:54 GMT\",\"nel\":\"{\\\"success_fraction\\\":0.01,\\\"report_to\\\":\\\"cf-nel\\\",\\\"max_age\\\":604800}\",\"report-to\":\"{\\\"endpoints\\\":[{\\\"url\\\":\\\"https:\\\\/\\\\/a.nel.cloudflare.com\\\\/report\\\\/v3?s=R1xxowtx0mun4hENbLNfeB6D8pGV9PDfJdYRMKneCXYxWPhTz5c7SUkOIVZbZ80AMu1zh9phiTEUAvMyfQP4MJt9SPrbkf5tNih%2FZymAXLdV%2FPvFnKBXbJ8a7cJA0F88\\\"}],\\\"group\\\":\\\"cf-nel\\\",\\\"max_age\\\":604800}\",\"server\":\"cloudflare\",\"strict-transport-security\":\"max-age=31536000; includeSubDomains; preload\",\"vary\":\"origin, Accept-Encoding\",\"x-content-type-options\":\"nosniff\",\"x-envoy-upstream-service-time\":\"3\",\"x-evy-trace-listener\":\"listener_https\",\"x-evy-trace-route-configuration\":\"listener_https/all\",\"x-evy-trace-route-service-name\":\"envoyset-translator\",\"x-evy-trace-served-by-pod\":\"iad02/hubapi-td/envoy-proxy-5b5c96c966-58hgh\",\"x-evy-trace-virtual-host\":\"all\",\"x-hubspot-auth-failure\":\"401 Unauthorized\",\"x-hubspot-correlation-id\":\"d648677e-8e57-436f-937d-be9d4aea1ebb\",\"x-request-id\":\"d648677e-8e57-436f-937d-be9d4aea1ebb\",\"x-trace\":\"2BF72E4BDF67F1EE00D32853021FA9998311A5AE28000000000000000000\"}"," at process.<anonymous> (file:///var/runtime/index.mjs:1250:17)"," at process.emit (node:events:513:28)"," at emit (node:internal/process/promises:140:20)"," at processPromiseRejections (node:internal/process/promises:274:27)"," at processTicksAndRejections (node:internal/process/task_queues:97:32)"]}
Unknown application error occurred
Runtime.Unknown

Memory: 74/128 MB
Runtime: 1546.15 ms

```

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_[View the full topic](https://community.hubspot.com/t/custom-code-get-firstname-lastname-from-email-address/88815)._