# Root View Error in SplitVC chapter 47 StoreSearch

**URL:** <https://forums.kodeco.com/t/root-view-error-in-splitvc-chapter-47-storesearch/102218>\
**Category:** iOS Apprentice\
**Created:** [March 20, 2020, 7:21am UTC](https://forums.kodeco.com/t/root-view-error-in-splitvc-chapter-47-storesearch/102218 "2020-03-20T07:21:54Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![saipurva](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/saipurva/32/81494_2.png) [@saipurva](https://forums.kodeco.com/u/saipurva)\
**Post date:** [March 20, 2020, 7:21am UTC](https://forums.kodeco.com/t/root-view-error-in-splitvc-chapter-47-storesearch/102218/1 "2020-03-20T07:21:54Z")

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Good morning!  
I keep on getting an error with window!.rootViewController in appDelegate.  
previously the var window: UIWindow? was created  
any help or suggestions please?  
Thank you  
 ![Screenshot 2020-03-20 at 07.17.33](https://files.chunter.kodeco.com/original/3X/4/9/49f68be6bed052a659074a1d577b96cc95238095.jpeg)

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**Author:** ![shogunkaramazov](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/shogunkaramazov/32/108826_2.png) [@shogunkaramazov](https://forums.kodeco.com/u/shogunkaramazov)\
**Post date:** [April 5, 2020, 11:05pm UTC](https://forums.kodeco.com/t/root-view-error-in-splitvc-chapter-47-storesearch/102218/2 "2020-04-05T23:05:00Z")

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@saipurva Does the error occur in the sample project for the chapter too?

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**Author:** ![mmichel1](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/mmichel1/32/89612_2.png) [@mmichel1](https://forums.kodeco.com/u/mmichel1)\
**Post date:** [April 11, 2020, 5:22am UTC](https://forums.kodeco.com/t/root-view-error-in-splitvc-chapter-47-storesearch/102218/3 "2020-04-11T05:22:43Z")

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This have to done in scene delegate instead of app delegate. You have to set these properties in scene delegate instead… the new version of Xcode move the var window: UIWindow? In scene delegate. It will work the same way as before

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**Author:** ![saipurva](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/saipurva/32/81494_2.png) [@saipurva](https://forums.kodeco.com/u/saipurva)\
**Post date:** [April 12, 2020, 9:53am UTC](https://forums.kodeco.com/t/root-view-error-in-splitvc-chapter-47-storesearch/102218/4 "2020-04-12T09:53:49Z")

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thank swill try out.

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**Author:** ![mcneils](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/mcneils/32/81494_2.png) [@mcneils](https://forums.kodeco.com/u/mcneils)\
**Post date:** [April 23, 2020, 2:23am UTC](https://forums.kodeco.com/t/root-view-error-in-splitvc-chapter-47-storesearch/102218/5 "2020-04-23T02:23:09Z")

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In what function would you put the

> detailVC.navigationItem.leftBarButtonItem = splitVC.displayModeButtonItem

line of code in, in the SceneDelegate file?

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**Author:** ![mcneils](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/mcneils/32/81494_2.png) [@mcneils](https://forums.kodeco.com/u/mcneils)\
**Post date:** [April 23, 2020, 2:29am UTC](https://forums.kodeco.com/t/root-view-error-in-splitvc-chapter-47-storesearch/102218/6 "2020-04-23T02:29:30Z")

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It doesn’t which make it more difficult to understand what’s going on

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**Author:** ![jvantoor](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/jvantoor/32/81494_2.png) [@jvantoor](https://forums.kodeco.com/u/jvantoor)\
**Post date:** [April 23, 2020, 8:39pm UTC](https://forums.kodeco.com/t/root-view-error-in-splitvc-chapter-47-storesearch/102218/7 "2020-04-23T20:39:28Z")

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I added it to:

scene( \_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions)

This worked for me.

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**Author:** ![shogunkaramazov](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/shogunkaramazov/32/108826_2.png) [@shogunkaramazov](https://forums.kodeco.com/u/shogunkaramazov)\
**Post date:** [July 5, 2020, 12:27am UTC](https://forums.kodeco.com/t/root-view-error-in-splitvc-chapter-47-storesearch/102218/8 "2020-07-05T00:27:21Z")

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@mcneils Do you still have issues with this?

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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:** [September 2, 2020, 11:21pm UTC](https://forums.kodeco.com/t/root-view-error-in-splitvc-chapter-47-storesearch/102218/9 "2020-09-02T23:21:54Z")

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