# Chapter 2 - cannot find 'Observable' in scope

**URL:** <https://forums.kodeco.com/t/chapter-2-cannot-find-observable-in-scope/145672>\
**Category:** RxSwift\
**Created:** [August 6, 2021, 8:00am UTC](https://forums.kodeco.com/t/chapter-2-cannot-find-observable-in-scope/145672 "2021-08-06T08:00:28Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![peterhwang](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/peterhwang/32/100917_2.png) [@peterhwang](https://forums.kodeco.com/u/peterhwang)\
**Post date:** [August 6, 2021, 8:00am UTC](https://forums.kodeco.com/t/chapter-2-cannot-find-observable-in-scope/145672/1 "2021-08-06T08:00:28Z")

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![스크린샷 2021-08-06 오후 4.58.40](https://files.chunter.kodeco.com/original/3X/5/3/53e9c6d1c47c9087dfa82dd57c5ab4eca3d4d388.jpeg)

As you see the screenshot, I got error messages “cannot find ‘Observable’ in scope”.  
I didi run bootstrap.sh, already.

What’s wrong? 😢

Thank you for your help and hint

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**Author:** ![mick80234](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/mick80234/32/102075_2.png) [@mick80234](https://forums.kodeco.com/u/mick80234)\
**Post date:** [August 12, 2021, 5:08pm UTC](https://forums.kodeco.com/t/chapter-2-cannot-find-observable-in-scope/145672/2 "2021-08-12T17:08:33Z")

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I unfortunately have the same issue.

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**Author:** ![hammerhead](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/hammerhead/32/110937_2.png) [@hammerhead](https://forums.kodeco.com/u/hammerhead)\
**Post date:** [August 16, 2021, 4:32pm UTC](https://forums.kodeco.com/t/chapter-2-cannot-find-observable-in-scope/145672/3 "2021-08-16T16:32:14Z")

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If you are using XCODE 12, make sure the ‘build active scheme’ checkbox on the right is checked. That fixed the problem for me.

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**Author:** ![system](https://s3.amazonaws.com/cdn.raywenderlich.com/community/forum-assets/noun-game-ghost-878668.png) [@system](https://forums.kodeco.com/u/system)\
**Post date:** [January 20, 2022, 12:00am UTC](https://forums.kodeco.com/t/chapter-2-cannot-find-observable-in-scope/145672/4 "2022-01-20T00:00:43Z")

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