Unable to get the tasks using filter id when candiateGroup is made as expression in Query column for ACT_RU_FILTER

Hi All,
We are Unable to get the tasks using filter id when candiateGroup is made as expression in Query column for ACT_RU_FILTER

REST API : http://localhost:9090/camunda/engine-rest/filter/5e45b8c7-0302-11ef-a60c-103d1ca05358/list

@Component
@RestController("/camunda")
public class CamundaRestClient {

	public static final String PD_KEY = "CollateralFourEyeCheck";

	@Autowired
	private RuntimeService runtimeService;

	@PostMapping(value = "/start", produces = APPLICATION_JSON_VALUE)
	public void startProcess() {
		Map<String, Object> variables = new HashMap<>();
		variables.put("candidateGroup", "CPFFourEyeCheckApprover");
		runtimeService.startProcessInstanceByKey(PD_KEY, variables);
	}
}

From Camunda UI we are getting the tasks in appropriate filter, but while doing the same from REST API we are not able to get the tasks which are there under mentioned filter.

Below is the error we are getting from postman while hitting the rest api.

@Ingo_Richtsmeier , @Niall any help is appreciated.