# Handling fetch errors

HTTP response status codes are standard response codes that are returned by a web server to a client to indicate the status of a request. These codes help identify the cause of an error or the success of a request. Here are some common HTTP response status codes:

* `200 OK`: This status code indicates that the request was successful and that the requested resource was returned.
* `301 Moved Permanently`: This status code indicates that the requested resource has been permanently moved to a new URL.
* `400 Bad Request`: This status code indicates that the request was invalid or could not be understood by the server.
* `401 Unauthorized`: This status code indicates that the request requires authentication.
* `403 Forbidden`: This status code indicates that the server refuses to fulfill the request.
* `404 Not Found`: This status code indicates that the requested resource could not be found on the server.
* `500 Internal Server Error`: This status code indicates that an error occurred on the server while processing the request.

HTTP response status codes are three-digit codes, with the first digit indicating the general category of the response. For example, status codes in the `2xx` range indicate success, while codes in the `4xx` range indicate client errors and codes in the `5xx` range indicate server errors.