N1QL SEARCH() failed with SORT search_score() & LIMIT

This query failed:

select meta().id, search_score() as score, h.reviews from hotel h
where SEARCH(h,“travel”)
ORDER BY score DESC
LIMIT 10

[

{ "code": 5000, "msg": "n1fty: search request parse err - cause: json: error calling MarshalJSON for type json.RawMessage: invalid character '_' in numeric literal", "query": "select meta().id, search_score() as score, h.reviews from hotel h\nwhere SEARCH(h,\"friend\")\nORDER BY search_score() DESC\nLIMIT 10" }

]

 

Explain:

{
"#operator": "Sequence",
"~children": [
{
"#operator": "Sequence",
"~children": [
{
"#operator": "IndexFtsSearch",
"as": "h",
"bucket": "travel-sample",
"index": "hotel_reviews",
"index_id": "3db71d60db124221",
"keyspace": "hotel",
"namespace": "default",
"scope": "inventory",
"search_info":

{ "field": "\"\"", "limit": "10", "order": [ "score DESC" ], "outname": "out", "query": "\"friend\"" }

,
"using": "fts"
},

{ "#operator": "Fetch", "as": "h", "bucket": "travel-sample", "keyspace": "hotel", "namespace": "default", "scope": "inventory" }

,
{
"#operator": "Parallel",
"maxParallelism": 1,
"~child": {
"#operator": "Sequence",
"~children": [

{ "#operator": "Filter", "condition": "search(`h`, \"friend\")" }

,
{
"#operator": "InitialProject",
"result_terms": [

{ "expr": "(meta(`h`).`id`)" }

,

{ "as": "score", "expr": "search_score((`h`.`out`))" }

,

{ "expr": "(`h`.`reviews`)" }

]
}
]
}
}
]
},

{ "#operator": "Limit", "expr": "10" }

]
}