check for null if loading graps

Core/Core/ClientApp/src/app/home/home.service.ts

@@ -20,7 +20,9 @@ export class HomeService {
   private LoadHistoryData(): void {
     this.HttpClient.get<TransactionSumsContainer>('api/History').subscribe(res => {
-      console.log("History data call: ", res);
+      if (res === null)
+        return;
+
       this.HomeChartDefinitionsService.Expenses = res.expenses;
       this.HomeChartDefinitionsService.TrasactionPerSizeTypes = this.MakePieChartData(res.expensesPerSize);
       this.HomeChartDefinitionsService.TrasactionPerSymbolCategory = this.MakePieChartData(res.expensesPerSymbolCategory);
@@ -33,6 +35,9 @@ export class HomeService {
   private LoadForecastData(): void {
     this.HttpClient.get<TransactionSumsContainer>('api/Forecast').subscribe(res => {
+      if (res === null)
+        return;
+
       this.HomeChartDefinitionsService.ForecastTypes = new Array(res.smallCount, res.mediumCount, res.hugeCount);
       let fileArray = new Array<FutureTransaction>();
       for (let i: number = 0; i < res.expenses.length; i++) {