Golang x/crypto/acme: GetAuthorization will panic in some cases

What version of Go are you using (go version)?

$ go version 1.20.3

Does this issue reproduce with the latest release?

When using method client.GetAuthorization , it will panic unmarshal field authorization: json: cannot unmarshal object into Go struct field Challenge.Challenges.Error of type error

response data

{
    "identifier": {
        "type": "dns",
        "value": "example.com"
    },
    "status": "invalid",
    "expires": "2023-06-01T01:13:43Z",
    "challenges": [
        {
            "type": "dns-01",
            "status": "invalid",
            "error": {
                "type": "urn:ietf:params:acme:error:unauthorized",
                "detail": "No TXT record found at _acme-challenge.example.com",
                "status": 403
            },
            "url": "-",
            "token": "-",
            "validated": "2023-05-25T05:30:57Z"
        }
    ]
}

What operating system and processor architecture are you using (go env)?

$ go env

What did you do?

should fix it, this shouldn't panic.

Comment From: seankhliao

I don't see how this is possible. It should only be decoded into wire* types like wireError, not a generic error field https://go.googlesource.com/crypto/+/c0531f9c34514ad5c5551e2d6ce569ca673a8afd/acme/types.go#551