# 2.0.4-rc1 : An unknown error occured

**URL:** <https://community.homey.app/t/2-0-4-rc1-an-unknown-error-occured/9137>\
**Category:** Questions & Help\
**Created:** [February 13, 2019, 11:14am UTC](https://community.homey.app/t/2-0-4-rc1-an-unknown-error-occured/9137 "2019-02-13T11:14:41Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Sannies](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/sannies/32/10765_2.png) [@Sannies](https://community.homey.app/u/Sannies)\
**Post date:** [February 13, 2019, 11:14am UTC](https://community.homey.app/t/2-0-4-rc1-an-unknown-error-occured/9137/1 "2019-02-13T11:14:41Z")

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After update release 2.0.4-rc1 ikea light bulb not working anymore. When i want to turn on a light bulb an unknown error shows up. (See screenprint)

A Flow with the same ikea bulb work fine. Restarting the homey didn’t solve the problem.

 ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/2X/a/a2c91d0b3c5269affe98c2a6b80aa21d2405b117.jpeg)

Any help would be great

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**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\
**Post date:** [February 13, 2019, 12:13pm UTC](https://community.homey.app/t/2-0-4-rc1-an-unknown-error-occured/9137/2 "2019-02-13T12:13:59Z")

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[https://support.athom.com/hc/en-us/requests/new](https://support.athom.com/hc/en-us/requests/new)