/db/search/xq/searchBrws.xqerr:XPTY0004 checking function parameter 1 in call util:unescape-uri(untyped-value-check[xs:string, request:get-parameter("display_key", )], "UTF-8"): XPTY0004: The actual cardinality for parameter 1 does not match the cardinality declared in the function's signature: util:unescape-uri($escaped-string as xs:string, $encoding as xs:string) xs:string. Expected cardinality: exactly one, got 0. [at line 40, column 51, source: /db/search/xq/searchBrws.xq]