Unable to obtain wildcard certificate with DNS challenge using Go Daddy

[floatingpurr]

Hello there. I'm opening up this issue coming from this one from Traefik: traefik/traefik#6686

When I try to get a wildcard certificate with GoDaddy, I get the following error:

traefik | time="2020-04-16T10:24:59Z" level=error msg="Unable to obtain ACME certificate for domains "example.org,*.example.org" : unable to generate a certificate for the domains [example.org *.example.org]: acme: Error -> One or more domains had a problem:\n[example.org] acme: error: 403 :: urn:ietf:params:acme:error:unauthorized :: During secondary validation: Incorrect TXT record "null" found at _acme-challenge.example.org, url: \n" providerName=wildcard-godaddy.acme

It seems like it is a lego problem with GoDaddy. Please find here below the traefik log related to this lego problem:

traefik    | time="2020-04-16T10:23:10Z" level=debug msg="legolog: [INFO] [example.org, *.example.org] acme: Obtaining bundled SAN certificate"
traefik    | time="2020-04-16T10:23:10Z" level=debug msg="legolog: [INFO] [*.example.org] AuthURL: https://acme-v02.api.letsencrypt.org/acme/authz-v3/<id1>"
traefik    | time="2020-04-16T10:23:10Z" level=debug msg="legolog: [INFO] [example.org] AuthURL: https://acme-v02.api.letsencrypt.org/acme/authz-v3/<id2>"
traefik    | time="2020-04-16T10:23:10Z" level=debug msg="legolog: [INFO] [*.example.org] acme: use dns-01 solver"
traefik    | time="2020-04-16T10:23:10Z" level=debug msg="legolog: [INFO] [example.org] acme: Could not find solver for: tls-alpn-01"
traefik    | time="2020-04-16T10:23:10Z" level=debug msg="legolog: [INFO] [example.org] acme: Could not find solver for: http-01"
traefik    | time="2020-04-16T10:23:10Z" level=debug msg="legolog: [INFO] [example.org] acme: use dns-01 solver"
traefik    | time="2020-04-16T10:23:10Z" level=debug msg="legolog: [INFO] [*.example.org] acme: Preparing to solve DNS-01"
traefik    | time="2020-04-16T10:23:11Z" level=debug msg="legolog: [INFO] [*.example.org] acme: Trying to solve DNS-01"
traefik    | time="2020-04-16T10:23:11Z" level=debug msg="legolog: [INFO] [*.example.org] acme: Checking DNS record propagation using [127.0.0.11:53]"
traefik    | time="2020-04-16T10:23:11Z" level=debug msg="legolog: [INFO] Wait for propagation [timeout: 2m0s, interval: 2s]"
traefik    | time="2020-04-16T10:23:11Z" level=debug msg="legolog: [INFO] [*.example.org] acme: Waiting for DNS record propagation."
traefik    | time="2020-04-16T10:23:13Z" level=debug msg="legolog: [INFO] [*.example.org] acme: Waiting for DNS record propagation."
traefik    | time="2020-04-16T10:23:15Z" level=debug msg="legolog: [INFO] [*.example.org] acme: Waiting for DNS record propagation."
traefik    | time="2020-04-16T10:23:17Z" level=debug msg="legolog: [INFO] [*.example.org] acme: Waiting for DNS record propagation."
traefik    | time="2020-04-16T10:23:19Z" level=debug msg="legolog: [INFO] [*.example.org] acme: Waiting for DNS record propagation."
traefik    | time="2020-04-16T10:23:21Z" level=debug msg="legolog: [INFO] [*.example.org] acme: Waiting for DNS record propagation."
traefik    | time="2020-04-16T10:23:23Z" level=debug msg="legolog: [INFO] [*.example.org] acme: Waiting for DNS record propagation."
traefik    | time="2020-04-16T10:23:25Z" level=debug msg="legolog: [INFO] [*.example.org] acme: Waiting for DNS record propagation."
traefik    | time="2020-04-16T10:23:27Z" level=debug msg="legolog: [INFO] [*.example.org] acme: Waiting for DNS record propagation."
traefik    | time="2020-04-16T10:23:29Z" level=debug msg="legolog: [INFO] [*.example.org] acme: Waiting for DNS record propagation."
traefik    | time="2020-04-16T10:23:31Z" level=debug msg="legolog: [INFO] [*.example.org] acme: Waiting for DNS record propagation."
traefik    | time="2020-04-16T10:23:33Z" level=debug msg="legolog: [INFO] [*.example.org] acme: Waiting for DNS record propagation."
traefik    | time="2020-04-16T10:23:43Z" level=debug msg="legolog: [INFO] [*.example.org] The server validated our request"
traefik    | time="2020-04-16T10:23:43Z" level=debug msg="legolog: [INFO] [*.example.org] acme: Cleaning DNS-01 challenge"
traefik    | time="2020-04-16T10:23:44Z" level=debug msg="legolog: [INFO] sequence: wait for 1m0s"
traefik    | time="2020-04-16T10:24:44Z" level=debug msg="legolog: [INFO] [example.org] acme: Preparing to solve DNS-01"
traefik    | time="2020-04-16T10:24:45Z" level=debug msg="legolog: [INFO] [example.org] acme: Trying to solve DNS-01"
traefik    | time="2020-04-16T10:24:45Z" level=debug msg="legolog: [INFO] [example.org] acme: Checking DNS record propagation using [127.0.0.11:53]"
traefik    | time="2020-04-16T10:24:45Z" level=debug msg="legolog: [INFO] Wait for propagation [timeout: 2m0s, interval: 2s]"
traefik    | time="2020-04-16T10:24:45Z" level=debug msg="legolog: [INFO] [example.org] acme: Waiting for DNS record propagation."
traefik    | time="2020-04-16T10:24:47Z" level=debug msg="legolog: [INFO] [example.org] acme: Waiting for DNS record propagation."
traefik    | time="2020-04-16T10:24:49Z" level=debug msg="legolog: [INFO] [example.org] acme: Waiting for DNS record propagation."
traefik    | time="2020-04-16T10:24:51Z" level=debug msg="legolog: [INFO] [example.org] acme: Waiting for DNS record propagation."
traefik    | time="2020-04-16T10:24:53Z" level=debug msg="legolog: [INFO] [example.org] acme: Waiting for DNS record propagation."
traefik    | time="2020-04-16T10:24:55Z" level=debug msg="legolog: [INFO] [example.org] acme: Waiting for DNS record propagation."
traefik    | time="2020-04-16T10:24:58Z" level=debug msg="legolog: [INFO] [example.org] acme: Cleaning DNS-01 challenge"
traefik    | time="2020-04-16T10:24:58Z" level=debug msg="legolog: [INFO] Skipping deactivating of valid auth: https://acme-v02.api.letsencrypt.org/acme/authz-v3/<id1>"
traefik    | time="2020-04-16T10:24:58Z" level=debug msg="legolog: [INFO] Deactivating auth: https://acme-v02.api.letsencrypt.org/acme/authz-v3/<id2>"
traefik    | time="2020-04-16T10:24:59Z" level=debug msg="legolog: [INFO] Unable to deactivate the authorization: https://acme-v02.api.letsencrypt.org/acme/authz-v3/<id2>"
traefik    | time="2020-04-16T10:24:59Z" level=error msg="Unable to obtain ACME certificate for domains \"example.org,*.example.org\" : unable to generate a certificate for the domains [example.org *.example.org]: acme: Error -> One or more domains had a problem:\n[example.org] acme: error: 403 :: urn:ietf:params:acme:error:unauthorized :: During secondary validation: Incorrect TXT record \"null\" found at _acme-challenge.example.org, url: \n" providerName=wildcard-godaddy.acme