Const
A query value given explicitly must be a non-blank string. A blank sortBy would be sent as sortBy= and replace the default sort, which GeoServer needs to page (startIndex on an unsorted query is an HTTP 400) and to give a stable order.
sortBy
sortBy=
startIndex
A query value given explicitly must be a non-blank string. A blank
sortBywould be sent assortBy=and replace the default sort, which GeoServer needs to page (startIndexon an unsorted query is an HTTP 400) and to give a stable order.