# Persistent HTTP 500 error in Application Builder – Preview and Live
**URL:** https://community.baserow.io/t/persistent-http-500-error-in-application-builder-preview-and-live/12800
**Category:** Uncategorized
**Created:** [August 20, 2026, 7:25pm UTC](https://community.baserow.io/t/persistent-http-500-error-in-application-builder-preview-and-live/12800 "2026-08-20T19:25:49Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@WaaahsCooking](https://community.baserow.io/u/WaaahsCooking)
#### Post date: [August 20, 2026, 7:25pm UTC](https://community.baserow.io/t/persistent-http-500-error-in-application-builder-preview-and-live/12800/1 "2026-08-20T19:25:49Z")
Please fill in the questionnaire below.
## Technical Help Questionnaire
Have you read and followed the instructions at: [\*READ ME FIRST\* Technical Help FAQs - #2 by nigel](https://community.baserow.io/t/read-me-first-technical-help-faqs/17/2) ?
**Answer:** YES
### Describe the problem
#### Describe, step by step, how to reproduce the error or problem you are encountering.
Since Tuesday evening (August 18), my Baserow Application Builder has been returning an HTTP 500 error.
The problem can be reproduced as follows:
1. Open my Baserow Application Builder.
2. The Application Builder editor loads normally and the database records are visible.
3. Click “Preview” — the page returns “Request failed with status code 500”.
4. Open the published application at `https://waaahscooking.baserow.site` — the same HTTP 500 error occurs.
5. The error also occurs on multiple pages, including the Home page.
6. Clicking “Back to Home” from the error page also returns the same error.
The editor itself continues to work normally. The problem only occurs when the application is run in Preview or as the published application.
#### Provide screenshots or include share links showing:
[https://baserow.io/builder/526135/preview](https://baserow.io/builder/526135/preview)
[https://waaahscooking.baserow.site](https://waaahscooking.baserow.site)
#### How many rows in total do you have in your Baserow tables?
16
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### Author:  [@olgatrykush](https://community.baserow.io/u/olgatrykush)
#### Post date: [August 21, 2026, 1:55pm UTC](https://community.baserow.io/t/persistent-http-500-error-in-application-builder-preview-and-live/12800/2 "2026-08-21T13:55:26Z")
Hey @WaaahsCooking, could you please send me the workspace export via direct message?
---
### Author:  [@olgatrykush](https://community.baserow.io/u/olgatrykush)
#### Post date: [August 26, 2026, 9:41am UTC](https://community.baserow.io/t/persistent-http-500-error-in-application-builder-preview-and-live/12800/3 "2026-08-26T09:41:23Z")
Hey @WaaahsCooking, thanks for providing the files. We quickly checked, and it’s the same bug that other users have reported over the last few days. The fix is here: [fix: Ensure Aggregate rows formula without property is correctly handled by paljort · Pull Request #5932 · baserow/baserow · GitHub](https://github.com/baserow/baserow/pull/5932)
Sorry about the inconvenience 🙌
---
### Author:  [@paljort](https://community.baserow.io/u/paljort)
#### Post date: [August 27, 2026, 5:00am UTC](https://community.baserow.io/t/persistent-http-500-error-in-application-builder-preview-and-live/12800/4 "2026-08-27T05:00:50Z")
Hi @WaaahsCooking The fix has been deployed. Please let us know if you have any issues.
---
### Author:  [@WaaahsCooking](https://community.baserow.io/u/WaaahsCooking)
#### Post date: [August 28, 2026, 9:37am UTC](https://community.baserow.io/t/persistent-http-500-error-in-application-builder-preview-and-live/12800/5 "2026-08-28T09:37:56Z")
I can see the app live now without the error message.
Thanks for your help!
Kind regards,
ShiWah