# Sample code is not working

**URL:** <https://openvidu.discourse.group/t/sample-code-is-not-working/4960>\
**Category:** Issues developing apps\
**Tags:** v2\
**Created:** [January 29, 2024, 5:37am UTC](https://openvidu.discourse.group/t/sample-code-is-not-working/4960 "2024-01-29T05:37:28Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![icepie](https://yyz2.discourse-cdn.com/free1/user_avatar/openvidu.discourse.group/icepie/32/2385_2.png) [@icepie](https://openvidu.discourse.group/u/icepie)\
**Post date:** [January 29, 2024, 5:37am UTC](https://openvidu.discourse.group/t/sample-code-is-not-working/4960/1 "2024-01-29T05:37:28Z")

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Hello i am the begginer in using openvidu.

(Full control of the UI - Basc Tutorials - openvidu-react)  
sample code worked properly until last friday.

However, from the next day, the following error appeared and it did not work properly.

 ![image](https://global.discourse-cdn.com/free1/uploads/openvidu/original/2X/f/fca8c8025974f72b0ff6a2f3cc38540d9fd88151.png)

I am curious why this error occurs even though I did not modify the sample code.

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**Author:** ![cruizba](https://yyz2.discourse-cdn.com/free1/user_avatar/openvidu.discourse.group/cruizba/32/18_2.png) [@cruizba](https://openvidu.discourse.group/u/cruizba)\
**Post date:** [January 30, 2024, 12:34pm UTC](https://openvidu.discourse.group/t/sample-code-is-not-working/4960/2 "2024-01-30T12:34:44Z")

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Now it should work. Our demos infrastructure was down for maintenance.