# Update error from 3.9.3 to 4.x.x

**URL:** <https://forums.rocket.chat/t/update-error-from-3-9-3-to-4-x-x/18255>\
**Category:** Community Support\
**Created:** [November 3, 2023, 10:52am UTC](https://forums.rocket.chat/t/update-error-from-3-9-3-to-4-x-x/18255 "2023-11-03T10:52:03Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![michal.zacek](https://avatars.discourse-cdn.com/v4/letter/m/8edcca/32.png) [@michal.zacek](https://forums.rocket.chat/u/michal.zacek)\
**Post date:** [November 3, 2023, 10:52am UTC](https://forums.rocket.chat/t/update-error-from-3-9-3-to-4-x-x/18255/1 "2023-11-03T10:52:03Z")

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Hello,

Upgrading from the old version 3.9.3 to one of the 4.x.x versions (4.0.0, 4.20, 4.6.0) always ends in an error:  
Your database migration failed:  
Failed to load the App “Poll” (c33fa1a6-68a7-491e-bf49-9d7b99671c48) as it requires v1.0.0 of the App API however your server comes with v1.28.0

We would be grateful for any help,  
Regards,  
Michal

Server Setup Information:  
Rocket.Chat Version: 3.9.3  
NodeJS Version: 12.18.4 - x64  
MongoDB Version: 6.0.11  
MongoDB Engine: wiredTiger  
Platform: linux