Endpoint URL is not set on process instance

Getting the following issue event if kogito.service.url is set on runtime:

{
"errors": [
{
"message": "Cannot return null for non-nullable type: 'String' within parent 'ProcessInstance' (/ProcessInstances[0]/endpoint)",
"path": [
"ProcessInstances",
0,
"endpoint"
],
"extensions":

{ "classification": "DataFetchingException" }

}
],
"data":

{ "ProcessInstances": [ null ] }

}