# Program Error: Cannot read properties of null (reading '\_width')

**URL:** https://forum.makecode.com/t/program-error-cannot-read-properties-of-null-reading-width/17393
**Category:** Help
**Created:** [January 12, 2023, 6:11pm UTC](https://forum.makecode.com/t/program-error-cannot-read-properties-of-null-reading-width/17393 "2023-01-12T18:11:55Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Esben](https://avatars.discourse-cdn.com/v4/letter/e/e47c2d/32.png) [@Esben](https://forum.makecode.com/u/Esben)
#### Post date: [January 12, 2023, 6:11pm UTC](https://forum.makecode.com/t/program-error-cannot-read-properties-of-null-reading-width/17393/1 "2023-01-12T18:11:55Z")

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Program Error: Cannot read properties of null (reading ‘\_width’)

HELP PLEASE u can only see the error in Javascript [https://arcade.makecode.com/S67326-02387-81003-29766](https://arcade.makecode.com/S67326-02387-81003-29766)

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### Author: ![Blobbey](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/blobbey/32/20831_2.png) [@Blobbey](https://forum.makecode.com/u/Blobbey)
#### Post date: [February 14, 2023, 11:08pm UTC](https://forum.makecode.com/t/program-error-cannot-read-properties-of-null-reading-width/17393/2 "2023-02-14T23:08:04Z")

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The problem with this seems to be the 3D shooter extension. I’m not sure why, but it’s messing up your game. The game should work fine if you delete it.