---
title: Troubleshoot ZITADEL
---

import InstanceNotFound from "../../../self-hosting/deploy/troubleshooting/_instance_not_found.mdx";

import UpstreamHeader from "../../../self-hosting/deploy/troubleshooting/_upstream_header.mdx"

## Instance not found

<InstanceNotFound components={props.components} />

## upstream sent too big header while reading response header from upstream

<UpstreamHeader components={props.components} />