#  Random Exception on webinar registrants

**URL:** <https://devforum.zoom.us/t/random-exception-on-webinar-registrants/90614>\
**Category:** Webinars\
**Created:** [June 21, 2023, 8:37pm UTC](https://devforum.zoom.us/t/random-exception-on-webinar-registrants/90614 "2023-06-21T20:37:52Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![eduardo.dorantes](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/eduardo.dorantes/32/49632_2.png) [@eduardo.dorantes](https://devforum.zoom.us/u/eduardo.dorantes)\
**Post date:** [June 21, 2023, 8:37pm UTC](https://devforum.zoom.us/t/random-exception-on-webinar-registrants/90614/1 "2023-06-21T20:37:52Z")

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Hello friends,

I have an application made with PHP, communicated with Zoom across API, for API Consumption I use Guzzle Library, In short, I have to register a user in several Webinars so I have to iterate on the ids, but sometimes the endpoint of [https://api.zoom.us/v2/webinars/{id}/registrants](https://api.zoom.us/v2/webinars/%7Bid%7D/registrants) returns an exception with a route I don’t know, this is the exception

```auto
`https://u6694935.ct.sendgrid.net/ls/click?upn=SlORnTDzjTKQoDvo5BjAuI-2FIv3X2-2BJCWMM-2FhNDgObEJuEyq9Xmq5kq5p6ntXyfNEOseg4zB9bVZ5pw4moWUwxHBFWeMrnwbplc0Cb48R2MA-3DQHx2_zdujN-2FH-2Bo1hKZ5YQhYiJBmdFBiwWyY7ROOn6wQX3EXaXA-2Bai3Lh17pLLRmBMVgy7yNn84XMQkYicQkYYHrVPId59LoS9iNcJAv3-2FdP8ijgZd5TzN8H-2BAwOezo6idwSXxG99EuoyXh6tYTumJHFaq-2FgQ3JpMyXBoxLRrnqiaLlTtlOPPnQ-2Bu2FiFXis9omIa4dPjsnEQ7nKs2k5-2BmJ7Ytm0Lmfjd0IS5o-2BUalgA1HDrk-3D resulted in a `401 Unauthorized` response:
{"code":124,"message":"Invalid access token."}

```

I hope you can help me solve why this happens, regards

---

<div class="post-metadata">

**Author:** ![elisa.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/elisa.zoom/32/47836_2.png) [@elisa.zoom](https://devforum.zoom.us/u/elisa.zoom)\
**Post date:** [June 28, 2023, 5:22pm UTC](https://devforum.zoom.us/t/random-exception-on-webinar-registrants/90614/2 "2023-06-28T17:22:42Z")

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Hi @eduardo.dorantes  
Thanks for reaching out to us and welcome to our community  
Are you still experiencing this issue?  
I have not seen that exception in the past.