SI-2832-Verdichtung
- Bugfix

Signed-off-by: Dennis Schmitt <dennis.schmitt@pta.de>

projects/grid-failure-information-table-app/src/app/app.component.ts

diff --git a/projects/grid-failure-information-table-app/src/app/app.component.ts b/projects/grid-failure-information-table-app/src/app/app.component.ts
index 16db99c..b8d2492 100644
--- a/projects/grid-failure-information-table-app/src/app/app.component.ts
+++ b/projects/grid-failure-information-table-app/src/app/app.component.ts
@@ -96,7 +96,7 @@
   }
 
   private _getLastModeDate(): number {
-    let modeDates: number[] = this._gridFailuresAll.map(gf => Date.parse(gf.modDate));
+    let modeDates: number[] = !!this._gridFailuresAll && this._gridFailuresAll.map(gf => Date.parse(gf.modDate));
     modeDates = modeDates.sort((a, b) => b - a); // sort timestamps descending
     return modeDates[0];
   }