consul/website/content/docs/api-gateway/usage/errors.mdx

---
layout: docs
page_title: Consul API Gateway Error Messages
description: >-
  Learn how to apply a configured Consul API Gateway to your Kubernetes cluster, review the required fields for rerouting HTTP requests, and troubleshoot an error message.
---

# Error Messages

This topic provides information about potential error messages associated with Consul API Gateway. If you receive an error message that does not appear in this section, refer to the following resources:

- [Common Consul errors](/consul/docs/troubleshoot/common-errors#common-errors-on-kubernetes)
- [Consul troubleshooting guide](/consul/docs/troubleshoot/common-errors)
- [Consul Discuss forum](https://discuss.hashicorp.com/)

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**Conditions:**
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**Impact:**
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**Resolution:**
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## Helm installation failed: "no matches for kind"

```log
Error: INSTALLATION FAILED: unable to build kubernetes objects from release manifest: [unable to recognize "": no matches for kind "GatewayClass" in version "gateway.networking.k8s.io/v1alpha2", unable to recognize "": no matches for kind "GatewayClassConfig" in version "api-gateway.consul.hashicorp.com/v1alpha1"]
```
**Conditions:**
Consul API Gateway generates this error when the required CRD files have not been installed in Kubernetes prior to installing Consul API Gateway.

**Impact:**
The installation process typically fails after this error message is generated.

**Resolution:**
Install the required CRDs. Refer to the [Consul API Gateway installation instructions](/consul/docs/api-gateway/install#installation) for instructions.

## Operation cannot be fulfilled, the object has been modified

```
{"error": "Operation cannot be fulfilled on gatewayclassconfigs.consul.hashicorp.com \"consul-api-gateway\": the object has been modified; please apply your changes to the latest version and try again"}

```
**Conditions:**
This error occurs when the gateway controller attempts to update an object that has been modified previously. It is a normal part of running the controller and will resolve itself by automatically retrying.

**Impact:**
Excessive error logs are produced, but there is no impact to the functionality of the controller.

**Resolution:**
No action needs to be taken to resolve this issue.