The value of '#/properties/results/items/properties/stacker_type' does not match schema definition.

[aryzing]

Describe the bug
Getting 500's from the API.

Endpoint:

https://api.mainnet.hiro.so/extended/v2/pox/cycles/94/signers/0x02877ce29ba35458b827a6ea18510b9058ae4c30e2c33d288f2982c13497caec6e/stackers?offset=0&limit=200

Response:

{
  statusCode: 500,
  error: "Internal Server Error",
  message: "The value of '#/properties/results/items/properties/stacker_type' does not match schema definition.",
}

To Reproduce
Just call the endpoint above

Expected behavior
A response with the list of stackers

[diwakergupta]

@smcclellan this was fixed in #2115 -- shouldn't this have auto-closed?