rest_sanitize_value_from_schema (since 5.5.0; The "type" schema keyword for from can only be one of the built-in types: array, object, string, number, integer, boolean, and null.)
should be string, like the to param
https://github.com/UCDavisLibrary/ucdlib-wp-plugins/blob/main/ucdlib-locations/includes/api.php#L55
should be string, like the
toparamhttps://github.com/UCDavisLibrary/ucdlib-wp-plugins/blob/main/ucdlib-locations/includes/api.php#L55