NameserverGroup list doesn't work

[Lars-]

You probably made a mistake in the order of the calls on your end, because it looks like it's searching for a nameserver with the name "group".

PHP Fatal error:  Uncaught Openprovider\Api\Rest\Client\Base\ApiException: [500] Server error: `GET https://api.openprovider.eu/v1beta/dns/nameservers/groups?limit=100&order_by.ns_group=asc` resulted in a `500 Internal Server Error` response:
{"desc":"Nameserver not found in the Openprovider system","code":224}

[antoineveldhoven]

I know this is a rather old issue, just stumbled across it.
I just queried this API call without errors.

I took the sample.php from the examples directory and changed line 36 into:
$result = $client->getDnsModule()->getNsGroupServiceApi()->listGroups();

This results in a request like the one you've mentioned:
https://api.openprovider.eu/v1beta/dns/nameservers/groups?limit=100&order_by.ns_group=asc

I can confirm it is working.