# Sensu Web UI Crash when trying to see checks

**URL:** <https://discourse.sensu.io/t/sensu-web-ui-crash-when-trying-to-see-checks/2755>\
**Category:** Sensu Go\
**Created:** [November 29, 2021, 10:44am UTC](https://discourse.sensu.io/t/sensu-web-ui-crash-when-trying-to-see-checks/2755 "2021-11-29T10:44:33Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Itamar\_Shpak](https://sea2.discourse-cdn.com/flex016/user_avatar/discourse.sensu.io/itamar_shpak/32/563_2.png) [@Itamar\_Shpak](https://discourse.sensu.io/u/Itamar_Shpak)\
**Post date:** [November 29, 2021, 10:44am UTC](https://discourse.sensu.io/t/sensu-web-ui-crash-when-trying-to-see-checks/2755/1 "2021-11-29T10:44:34Z")

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Hey all, After upgrading sensu to 6.5 i get this error message when trying to see check details\go to entities, or any other things except the list of events and dashboard.

I also noticed when upgrading from 6.5 to 6.6 (thought it will fix the issue) after runnign sensu-backend upgrade it asks to upgrade db from 5.\* version to 6.\* version (when sensu was version 6.5), and when clicking Y is says the db is already updated

We are working with 3 sensu-go backends and 1 postgresql RDS.

![Screen Shot 2021-11-29 at 12.33.24](https://us1.discourse-cdn.com/flex016/uploads/sensu/original/1X/24ce61a70e7d14b25ac7f8234a57c995480f9ab1.png)

I can see this error in log when trying to check entities\checks:  
Nov 29 11:03:47 {“component”:“apid.routers”,“errors”:[{“message”:“internal error: can’t scan into dest[5]: cannot scan null into \*string”,“locations”:[{“line”:2,“column”:3}],“path”:[“resp”]}],“level”:“error”,“msg”:“error(s) occurred while executing GraphQL operation”,“time”:“2021-11-29T11:03:47Z”}