Issue with mutation - change_column_value with date column

[jeffnb (Jeff N)]

I am getting the exact same problem. blocking development

{
“error_code”: “ColumnValueException”,
“status_code”: 400,
“error_message”: “change_column_value invalid value”,
“error_data”: {
“column_value”: “2021-01-31”,
“column_type”: “DateColumn”
}
}