# Hello,there i get a warn message

**URL:** <https://discourse.lynckia.com/t/hello-there-i-get-a-warn-message/393>\
**Category:** Uncategorized\
**Created:** [February 18, 2017, 3:36am UTC](https://discourse.lynckia.com/t/hello-there-i-get-a-warn-message/393 "2017-02-18T03:36:48Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![guhui](https://avatars.discourse-cdn.com/v4/letter/g/ed655f/32.png) [@guhui](https://discourse.lynckia.com/u/guhui)\
**Post date:** [February 18, 2017, 3:36am UTC](https://discourse.lynckia.com/t/hello-there-i-get-a-warn-message/393/1 "2017-02-18T03:36:49Z")

</div>

i install licode by Official’s site , and i run success and the demo is success, but the console output some message:  
-381604350ff5] (rtp\_utility.cc:342): Failed to find extension id: 1  
[erizo-65d805f2-f297-b064-2327-381604350ff5] (rtp\_utility.cc:342): Failed to find extension id: 1  
[erizo-65d805f2-f297-b064-2327-381604350ff5] (rtp\_utility.cc:342): Failed to find extension id: 1  
[erizo-65d805f2-f297-b064-2327-381604350ff5] (rtp\_utility.cc:342): Failed to find extension id: 1  
[erizo-65d805f2-f297-b064-2327-381604350ff5] (rtp\_utility.cc:342): Failed to find extension id: 1  
[erizo-65d805f2-f297-b064-2327-381604350ff5] (rtp\_utility.cc:342): Failed to find extension id: 1  
[erizo-65d805f2-f297-b064-2327-381604350ff5] (rtp\_utility.cc:342): Failed to find extension id: 1  
[erizo-65d805f2-f297-b064-2327-381604350ff5] (rtp\_utility.cc:342): Failed to find extension id: 1  
[erizo-65d805f2-f297-b064-2327-381604350ff5] (rtp\_utility.cc:342): Failed to find extension id: 1  
[erizo-65d805f2-f297-b064-2327-381604350ff5] (rtp\_utility.cc:342): Failed to find extension id: 1  
[erizo-65d805f2-f297-b064-2327-381604350ff5] (rtp\_utility.cc:342): Failed to find extension id: 1  
[erizo-65d805f2-f297-b064-2327-381604350ff5] (rtp\_utility.cc:342): Failed to find extension id: 1

what i can do?please help