How can I search order by tags

More on this particular issue, I found doing the call:
https://apiverson.ordoro.com/order?untagged=true works (at least using postman) and retrieve all the orders untagged, however doing the same call using this url:
https://api.ordoro.com/order?untagged=true
Returns this:
{
“error_message”: “‘NoneType’ object has no attribute ‘rule’”,
“param”: null
}

So, at this point not sure which url use, which one is supposed to be the correct, the api.ordoro or the apiverson.ordoro?

Regards,