ValidationErrorResponse

Returned with HTTP 400 when one or more query parameters fail
Joi validation. The errors array contains one human-readable
message per failed field.

{ "message": "Validation Error", "error": "Validation Error", "errors": [ "start_date: \"start_date\" with value \"2026/03/01\" fails to match the required pattern: /^\\d{4}-\\d{2}-\\d{2}$/" ] }