https://github.com/Neilpang/acme.sh/issues/1251

acme.sh

@@ -3598,6 +3598,10 @@ $_authorizations_map"
       _debug entry "$entry"
       if [ -z "$entry" ]; then
         _err "Error, can not get domain token entry $d"
+        _supported_vtypes="$(echo "$response" | _egrep_o "\"challenges\":\[[^]]*]" |  tr '{' "\n" | grep type | cut -d '"' -f 4 | tr "\n" ' ')"
+        if [ "$_supported_vtypes" ]; then
+          _err "The supported validation types are: $_supported_vtypes, but you specified: $vtype"
+        fi
         _clearup
         _on_issue_err "$_post_hook"
         return 1