# Error message 'virtual\_class\_not\_allowed'

**URL:** <https://community.homey.app/t/error-message-virtual-class-not-allowed/112533>\
**Category:** Questions & Help\
**Created:** [July 7, 2024, 3:03pm UTC](https://community.homey.app/t/error-message-virtual-class-not-allowed/112533 "2024-07-07T15:03:51Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Cees\_Kruit](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/cees_kruit/32/79221_2.png) [@Cees\_Kruit](https://community.homey.app/u/Cees_Kruit)\
**Post date:** [July 7, 2024, 3:03pm UTC](https://community.homey.app/t/error-message-virtual-class-not-allowed/112533/1 "2024-07-07T15:03:51Z")

</div>

Hello,  
I am new at this community and with Homey Pro 2019 device.  
I am adding most KaKu devices to Homey. First I could change device names but after some adding devices I get the message ’ Virtual\_class\_not\_allowed’.  
I tried to find anything about this message, but unfortunatly not found!  
Who can tell me what the message is about and how to solve?