lastSoldDate Issue?

Can someone please explain why I am receiving the error below when using the lastSoldDate filter?

---

I receive this error even if I copy and paste directly from the Browse API documentation: filter=lastSoldDate:[2018-08-30T00:00:00Z..2018-09-17T00:00:00Z]

---

"warnings": [
{
"errorId": 12002,
"domain": "API_BROWSE",
"category": "REQUEST",
"message": "The lastSoldDate filter value is invalid. For the valid values, refer to the API call documentation.",
"parameters": [
{
"name": "fieldName",
"value": "lastSoldDate"
},
{
"name": "filterValue",
"value": "[2025-01-01T00:00:00Z..2025-01-31T00:00:00Z]"
}
]
}