# App not able to load preview: GetDataFromDataValue error **URL:** \ **Category:** Ask the community\ **Created:** [January 25, 2024, 9:00am UTC](https://community.appfarm.io/t/app-not-able-to-load-preview-getdatafromdatavalue-error/1004 "2024-01-25T09:00:01Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![hakonv](https://avatars.discourse-cdn.com/v4/letter/h/e95f7d/32.png) [@hakonv](https://community.appfarm.io/u/hakonv)\ **Post date:** [January 25, 2024, 9:00am UTC](https://community.appfarm.io/t/app-not-able-to-load-preview-getdatafromdatavalue-error/1004/1 "2024-01-25T09:00:01Z")
I was adjusting quite a lot in my app in one go and when I tried to preview the app, I was met with the “Oops! Something went wrong” page. The error-message is: “getDataFromDataValue: dataValue.type is required” I’ve tried disabling all actions one at a time to no avail and I also do not think the problem lies within the On app load. The problem is probably somewhere in the UI editor, but I haven’t got a clue to where to begin and look. Any ideas? ---
**Author:** ![kristian](https://dub1.discourse-cdn.com/flex013/user_avatar/community.appfarm.io/kristian/32/58_2.png) [@kristian](https://community.appfarm.io/u/kristian)\ **Post date:** [January 25, 2024, 12:17pm UTC](https://community.appfarm.io/t/app-not-able-to-load-preview-getdatafromdatavalue-error/1004/3 "2024-01-25T12:17:16Z")
We have a challenge related to that error message that being investigated (it occurs in Dev environments from time to time). It will probably sort itself out after a while, but can you see if it works now (just did a manual restart of backend service)? You may use DM. ---
**Author:** ![hakonv](https://avatars.discourse-cdn.com/v4/letter/h/e95f7d/32.png) [@hakonv](https://community.appfarm.io/u/hakonv)\ **Post date:** [January 25, 2024, 12:20pm UTC](https://community.appfarm.io/t/app-not-able-to-load-preview-getdatafromdatavalue-error/1004/4 "2024-01-25T12:20:11Z")
That fixed it. Thanks a lot!