duplicate chart data

Hello, I’m trying to implement a pie chart but the data is displayed twice.
Here is the code used :

var pivot2 = new WebDataRocks({
			container: "#wdr-tableau_highchart",
		    toolbar: true,
		    height: 600,
		    report: {
			    dataSource: {
			      filename: urlDataSource
			    },
			    "slice": {
			        "rows": [
			            {
			                "uniqueName": "Code criée"
			            }
			        ],
			        "columns": [
			            {
			                "uniqueName": "Measures"
			            }
			        ],
			        "measures": [
			            {
			                "uniqueName": "Total somme poids du lot",
			                "aggregation": "sum",
			                "format": "4354nfho"
			            }
			        ]
			    },
			    "options": {
			        "grid": {
			            "type": "classic",
			            "showTotals": "off",
			            "showGrandTotals": "off"
			        }
			    },
			    "formats": [
			        {
			            "name": "4354nfho",
			            "thousandsSeparator": " ",
			            "decimalSeparator": ".",
			            "decimalPlaces": 2,
			            "currencySymbol": "",
			            "currencySymbolAlign": "left",
			            "nullValue": "",
			            "textAlign": "right",
			            "isPercent": false
			        }
			    ]
			},
			reportcomplete: function() {
				pivot2.off("reportcomplete");
				createChart();
			}
		});
		
		
		function createChart() {
		    pivot2.highcharts.getData({
		        type: "pie"
		    }, function(data) {
		        Highcharts.chart('highchartsContainer', data);
		    });
		}