My flow is getting error at the create reference stage on the flow.

When I checked the error description, this was what I got:

Message: The (&(objectClass=user)(objectCategory=person)(objectSid=*)(!samAccountType:1.2.840.113556.1.4.804:=3)(!userAccountControl:1.2.840.113556.1.4.804:=2)(&(physicalDeliveryOfficeName=)(title=***** ***** *****))) search filter is invalid.; ServiceName: ADService2; ServiceGuid: 83ac8763-ab63-4f86-8bc8-9bde8729b735; InnerExceptionMessage: ;

Please what could be the issue.