# Error while following Hello world

**URL:** <https://staging-discuss.dev.twitch.com/t/error-while-following-hello-world/21229>\
**Category:** Extensions\
**Created:** [May 19, 2019, 1:16pm UTC](https://staging-discuss.dev.twitch.com/t/error-while-following-hello-world/21229 "2019-05-19T13:16:22Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![minsub](https://d1d6mrmdu7ztse.cloudfront.net/user_avatar/staging-discuss.dev.twitch.com/minsub/32/4689_2.png) [@minsub](https://staging-discuss.dev.twitch.com/u/minsub)\
**Post date:** [May 19, 2019, 1:16pm UTC](https://staging-discuss.dev.twitch.com/t/error-while-following-hello-world/21229/1 "2019-05-19T13:16:22Z")

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Hi, I was following Hello World in doc ([Extensions | Twitch Developers](https://dev.twitch.tv/docs/extensions/#extensions-console--extensions-manager))  
and I got this error “An error occurred. Please check the Developer Tools console.”  
I checked my developer tools console but nothing seems wrong.  
What should I do?

 ![14](https://d2spem0quai2ol.cloudfront.net/original/2X/9/9fb11478d6a420934b2bd1592f19a1a415474749.png)

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**Author:** ![BarryCarlyon](https://d1d6mrmdu7ztse.cloudfront.net/user_avatar/staging-discuss.dev.twitch.com/barrycarlyon/32/253_2.png) [@BarryCarlyon](https://staging-discuss.dev.twitch.com/u/BarryCarlyon)\
**Post date:** [May 19, 2019, 4:21pm UTC](https://staging-discuss.dev.twitch.com/t/error-while-following-hello-world/21229/2 "2019-05-19T16:21:09Z")

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Install Node and NPM into your system/$PATH

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<div class="post-metadata">

**Author:** ![minsub](https://d1d6mrmdu7ztse.cloudfront.net/user_avatar/staging-discuss.dev.twitch.com/minsub/32/4689_2.png) [@minsub](https://staging-discuss.dev.twitch.com/u/minsub)\
**Post date:** [May 20, 2019, 3:50am UTC](https://staging-discuss.dev.twitch.com/t/error-while-following-hello-world/21229/3 "2019-05-20T03:50:08Z")

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Thanks. It worked.  
But there’s no instruction in the document that node.js should be installed to use rig. I think it must be stated in the document and the error message, not just showing that kinds of meaningless message.

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**Author:** ![Breci](https://d1d6mrmdu7ztse.cloudfront.net/user_avatar/staging-discuss.dev.twitch.com/breci/32/5635_2.png) [@Breci](https://staging-discuss.dev.twitch.com/u/Breci)\
**Post date:** [May 20, 2019, 8:29am UTC](https://staging-discuss.dev.twitch.com/t/error-while-following-hello-world/21229/4 "2019-05-20T08:29:39Z")

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![20](https://d2spem0quai2ol.cloudfront.net/original/2X/6/650c244fc783df067ffa4fc01c48968086851cd4.png)

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<div class="post-metadata">

**Author:** ![minsub](https://d1d6mrmdu7ztse.cloudfront.net/user_avatar/staging-discuss.dev.twitch.com/minsub/32/4689_2.png) [@minsub](https://staging-discuss.dev.twitch.com/u/minsub)\
**Post date:** [May 20, 2019, 8:59am UTC](https://staging-discuss.dev.twitch.com/t/error-while-following-hello-world/21229/5 "2019-05-20T08:59:28Z")

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Okay, it’s my fault!  
But I still hope the message to be changed with better instruction, or your screenshot image.  
There’s nothing related with this issue in developer console.  
Thanks for your help anyway.

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<div class="post-metadata">

**Author:** ![BarryCarlyon](https://d1d6mrmdu7ztse.cloudfront.net/user_avatar/staging-discuss.dev.twitch.com/barrycarlyon/32/253_2.png) [@BarryCarlyon](https://staging-discuss.dev.twitch.com/u/BarryCarlyon)\
**Post date:** [May 20, 2019, 9:53am UTC](https://staging-discuss.dev.twitch.com/t/error-while-following-hello-world/21229/6 "2019-05-20T09:53:26Z")

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This particular issue is unrelated to the Rig itself.

Animal Facts needs Go rather than Node as well.

An extension doesn’t need to be written in Node or Go. The choice is yours