---
description: Troubleshoot Cloudflare 1035 error code.
title: Error 1035
image: https://developers.cloudflare.com/og-docs.png
---

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# Error 1035

Last updated Aug 24, 2026|Copy as Markdown|[View as Markdown](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/support/troubleshooting/http-status-codes/cloudflare-1xxx-errors/error-1035/index.md)|[Agent setup](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/agent-setup/)

## Error 1035: Invalid request rewrite (invalid URI path)

This error indicates an invalid URI path in a request rewrite.

### Common cause

The value or expression of your rewritten URI path is not valid.

This error also occurs when the destination of the URL rewrite is a path under `/cdn-cgi/`.

### Resolution

Make sure that the rewritten URI path is not empty and it starts with a `/` (slash) character.

For example, the following URI path rewrite expression is not valid:

`concat(lower(ip.src.country), http.request.uri.path)`

To fix the expression above, add a `/` prefix:

`concat("/", lower(ip.src.country), http.request.uri.path)`

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