Some DNS records were found that indicate TXT records having been incorrectly manually entered into DNS editor interfaces. The correct way to enter these records is to either remove the domain from the label (so enter "_acme-challenge.www.example.org" just as "_acme-challenge.www") or include a period (.) at the end of the label (so enter "_acme-challenge.example.org.").
The following probably-erroneous TXT records were found:
_acme-challenge.double.monkas.xyz.double.monkas.xyz
_acme-challenge.double.monkas.xyz.monkas.xyz
Challenge update failures for double.monkas.xyz in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/3764708
acme: error code 400 "urn:ietf:params:acme:error:dns": DNS problem: NXDOMAIN looking up TXT for _acme-challenge.double.monkas.xyz