Try to update chart labels

mean-app/dist/main.bundle.js

@@ -343,7 +343,9 @@ var LineChartComponent = (function () {
             var newLine = { data: res.lines.data, label: res.lines.label };
             newDataSet.push(newLine);
             _this.lineChartData = newDataSet;
-            _this.lineChartLabels = res.labels.data.slice();
+            var newDataSet2 = [];
+            newDataSet2.push(res.labels.data.slice());
+            _this.lineChartLabels = newDataSet2;
         });
         console.log("Init");
     };

mean-app/src/app/chart.component.ts

@@ -57,7 +57,9 @@ export class LineChartComponent implements OnInit {
         newDataSet.push(newLine);
         this.lineChartData = newDataSet;
 
-        this.lineChartLabels = res.labels.data.slice();
+        const newDataSet2 = [];
+        newDataSet2.push(res.labels.data.slice());
+        this.lineChartLabels = newDataSet2;
       });
 
     console.log("Init");