redisgraph.Graph literal.New undefined (type redisgraph.Graph has no field or method New)

In Ubuntu 18.04.01 Server Edition I installed redis-server:

marco@pc01:~$ redis-server --version
Redis server v=5.0.5 sha=00000000:0 malloc=jemalloc-5.1.0 bits=64 build=fc2f09ebe3c4d851

and the latest version of RedisGraph:

marco@pc01:~$ redis-cli
127.0.0.1:6379> GRAPH.QUERY MotoGP "CREATE (:Rider {name:'Valentino Rossi'})-
[:rides]->(:Team {name:'Yamaha'}), (:Rider {name:'Dani Pedrosa'})-[:rides]->(:Team 
{name:'Honda'}), (:Rider {name:'Andrea Dovizioso'})-[:rides]->(:Team {name:'Ducati'})"
1) 1) "Labels added: 2"
2) "Nodes created: 6"
3) "Properties set: 6"
4) "Relationships created: 3"
5) "Query internal execution time: 1.547186 milliseconds"
127.0.0.1:6379> GRAPH.QUERY MotoGP "MATCH (r:Rider)-[:rides]->(t:Team) WHERE 
t.name = 'Yamaha' RETURN r.name, t.name"
1) 1) "r.name"
2) "t.name"
2) 1) 1) "Valentino Rossi"
2) "Yamaha"
3) 1) "Query internal execution time: 0.970905 milliseconds"
127.0.0.1:6379> GRAPH.QUERY MotoGP "MATCH (r:Rider)-[:rides]->(t:Team {name:'Ducati'}) 
RETURN count(r)"
1) 1) "count(r)"
2) 1) 1) (integer) 1
3) 1) "Query internal execution time: 0.518645 milliseconds"
127.0.0.1:6379>

Running the following redisgraph-go example:

package main
import (
        "github.com/gomodule/redigo/redis"
        rg "github.com/redislabs/redisgraph-go"
)
func main() {
        conn, _ := redis.Dial("tcp", "0.0.0.0:6379")
        defer conn.Close()ì
        graph := rg.Graph{}.New("social", conn)
        john := rg.Node{
                Label: "person",
                Properties: map[string]interface{}{
                        "name":   "John Doe",
                        "age":    33,
                        "gender": "male",
                        "status": "single",
                },
        }
        graph.AddNode(&john)
        japan := rg.Node{
                Label: "country",
                Properties: map[string]interface{}{
                        "name": "Japan",
                },
         }
        graph.AddNode(&japan)
        edge := rg.Edge{
                Source:      &john,
                Relation:    "visited",
                Destination: &japan,
        }
        graph.AddEdge(&edge)
        graph.Commit()
        query := `MATCH (p:person)-[v:visited]->(c:country)
                   RETURN p.name, p.age, v.purpose, c.name`
        rs, _ := graph.Query(query)
        rs.PrettyPrint()
}

I got this error :

marco@pc01:~/RedisGraph/redisgraph-goExample$ go run main.go 
# command-line-arguments
./main.go:12:21: redisgraph.Graph literal.New undefined (type redisgraph.Graph has no field or 
 method New)

Any hints to solve it? Marco

RedisGraph / redisgraph-go

redisgraph.Graph literal.New undefined (type redisgraph.Graph has no field or method New) #11