# Error: “cannot read property ‘zone’ of undefined”

**URL:** <https://community.homey.app/t/error-cannot-read-property-zone-of-undefined/121976>\
**Category:** Questions & Help\
**Created:** [November 28, 2024, 8:14pm UTC](https://community.homey.app/t/error-cannot-read-property-zone-of-undefined/121976 "2024-11-28T20:14:36Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![FKey](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/fkey/32/14793_2.png) [@FKey](https://community.homey.app/u/FKey)\
**Post date:** [November 28, 2024, 8:14pm UTC](https://community.homey.app/t/error-cannot-read-property-zone-of-undefined/121976/1 "2024-11-28T20:14:36Z")

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I bought a 2nd-Hand homey pro 2018.  
Installed it clean with firmware upgrade.

When adding a new bought hue motion sensor I get an error  
 ![Image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/3/f/3fbb75a5f5c47361b9dff1e55e761379d2e1d952.png)

Anyone see this before?  
Strange thing is: when I add the same sensor to my 2nd homey (also 2018, same app version) the error is not occurring…

Another thing I noticed is that the app “zone activity does not show any of the zones (not the automatically created ones not new ones)

 ![Image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/d/0/d0060c758d3ffc4efb9efe19e33c338acb59c7de.png)

 ![Image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/a/8/a8f5d5d248859ea7fb76723f010d3e342e67c971.png)

 ![Image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/2/d/2db565e5658f13d8bcb17f95d5fe5a0a8c22e661.png)

Can my zones be corrupted?  
Any ideas?

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<div class="post-metadata">

**Author:** ![Peter\_Kawa](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_kawa/32/173848_2.png) [@Peter\_Kawa](https://community.homey.app/u/Peter_Kawa)\
**Post date:** [November 28, 2024, 11:54pm UTC](https://community.homey.app/t/error-cannot-read-property-zone-of-undefined/121976/2 "2024-11-28T23:54:22Z")

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Did you perform a “full software update” already? It installs the firmware from scratch. It might solve possible _bit-rot_ issues.  
Please reboot into recovery to get this option.

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<div class="post-metadata">

**Author:** ![FKey](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/fkey/32/14793_2.png) [@FKey](https://community.homey.app/u/FKey)\
**Post date:** [November 29, 2024, 12:04pm UTC](https://community.homey.app/t/error-cannot-read-property-zone-of-undefined/121976/3 "2024-11-29T12:04:35Z")

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I remember I did a software update.  
Dont recall the word full.

I will try again (no harm done, this was the 1st device I tried adding)

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<div class="post-metadata">

**Author:** ![FKey](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/fkey/32/14793_2.png) [@FKey](https://community.homey.app/u/FKey)\
**Post date:** [November 29, 2024, 4:47pm UTC](https://community.homey.app/t/error-cannot-read-property-zone-of-undefined/121976/4 "2024-11-29T16:47:30Z")

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The full software update did the job.  
Thanks @Peter_Kawa