ERROR: [object Object]: The requested operation is not yet supported by this sObject storage type, contact salesforce.com support for more information.

Query: SELECT Id, DEAL_NUM__c,  Vehicle_Status__c, MDF_DATE__c, Status_Updated_Date__c from VEHICLE_SALE__x  WHERE DAY_ONLY(MDF_DATE__c) >= 2021-12-09

NOTE: MDF_DATE__c is DateTime field type.