Hi everyone,
I encountered an issue while using the Recalculate function under Inventory Cost Correction in Manager.io.
When I click the Recalculate button, I receive the following error message:
DELETE /api4/inventory-unit-cost-batch failed: 520
… (HTML response shown in popup)
It appears that instead of a proper response, the system is returning an HTML error page with status code 520.
Details:
- Module: Inventory Cost Correction
- Action: Clicking “Recalculate”
- Result: Error popup with 520 response
- Browser: (you can add your browser here, e.g., Chrome/Safari)
- Version: (add your Manager.io version if available)
What I’ve tried:
- Refreshing the page
- Logging out and back in
- Trying a different browser
Still encountering the same issue.
Has anyone experienced this before or knows how to fix it?
Thanks in advance for your help!

